{"id":2622,"date":"2023-05-18T17:07:57","date_gmt":"2023-05-18T08:07:57","guid":{"rendered":"https:\/\/edu.ujhb.org\/?p=2622"},"modified":"2023-05-18T17:07:58","modified_gmt":"2023-05-18T08:07:58","slug":"react-hooks%e5%85%a5%e9%96%80%ef%bc%88%e6%97%a5%e6%9c%ac%e8%aa%9e%e7%89%88%ef%bc%89","status":"publish","type":"post","link":"https:\/\/edu.ujhb.org\/?p=2622","title":{"rendered":"React Hooks\u5165\u9580\uff08\u65e5\u672c\u8a9e\u7248\uff09"},"content":{"rendered":"\n<p>IT\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306e\u30d3\u30c7\u30aa\u3092\u3084\u308a\u305f\u3044\u306e\u3067\u3059\u304c\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u5fdc\u3058\u3066\u30d3\u30c7\u30aa\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306e\u30c6\u30ad\u30b9\u30c8\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u914d\u7f6e\u3057\u3066\u3044\u305f\u3060\u3051\u307e\u3059\u304b\u3002 React Hooks\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u304b\u3089\u59cb\u3081\u307e\u3057\u3087\u3046\u3001\u305d\u3053\u3067\u3042\u306a\u305f\u306f\u79c1\u306b\u30ab\u30d0\u30fc\u3059\u308b\u3082\u306e\u306e\u30ea\u30b9\u30c8\u3092\u4e0e\u3048\u307e\u3059\u3002 \u30c1\u30e3\u30c3\u30c8GPT<\/p>\n\n\n\n<p>\u3082\u3061\u308d\u3093\u3067\u3059\uff01 React \u30d5\u30c3\u30af\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306e\u6982\u8981\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7d39\u4ecb\n<ul class=\"wp-block-list\">\n<li>\u53cd\u5fdc\u30d5\u30c3\u30af\u306e\u80cc\u666f\u3068\u305d\u308c\u3089\u304c\u767b\u5834\u3057\u305f\u7406\u7531<\/li>\n\n\n\n<li>React\u30d5\u30c3\u30af\u304c\u5f93\u6765\u306e\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3088\u308a\u3082\u512a\u308c\u3066\u3044\u308b\u7406\u7531<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u57fa\u672c\u30b3\u30f3\u30bb\u30d7\u30c8\n<ul class=\"wp-block-list\">\n<li>\u53cd\u5fdc\u30d5\u30c3\u30af\u3068\u306f<\/li>\n\n\n\n<li>\u53cd\u5fdc\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u7406\u7531<\/li>\n\n\n\n<li>\u53cd\u5fdc\u30d5\u30c3\u30af\u306e\u5229\u70b9\u3068\u5236\u9650<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u72b6\u614b\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528\u72b6\u614b\u306e\u57fa\u672c\u7684\u306a\u4f7f\u7528\u6cd5<\/li>\n\n\n\n<li>\u72b6\u614b\u3092\u4f5c\u6210\u3057\u3066\u4f7f\u7528\u3059\u308b\u65b9\u6cd5<\/li>\n\n\n\n<li>\u30b9\u30c6\u30fc\u30bf\u30b9\u66f4\u65b0\u304a\u3088\u3073\u66f4\u65b0\u6a5f\u80fd<\/li>\n\n\n\n<li>\u72b6\u614b\u306e\u521d\u671f\u5316\u3068\u30ea\u30bb\u30c3\u30c8<\/li>\n\n\n\n<li>\u8907\u6570\u306e\u72b6\u614b\u5909\u6570\u3092\u4f7f\u7528\u3059\u308b<\/li>\n\n\n\n<li>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u914d\u5217\u3092\u72b6\u614b\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4f7f\u7528\u30a8\u30d5\u30a7\u30af\u30c8\u30d5\u30c3\u30af\n<ul class=\"wp-block-list\">\n<li>\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u52b9\u679c<\/li>\n\n\n\n<li>\u526f\u4f5c\u7528\u3068\u4f9d\u5b58\u95a2\u4fc2<\/li>\n\n\n\n<li>\u526f\u4f5c\u7528\u3092\u30af\u30ea\u30a2\u3057\u307e\u3059<\/li>\n\n\n\n<li>\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u30a2\u30d7\u30ed\u30fc\u30c1\u3068\u306e\u6bd4\u8f03<\/li>\n\n\n\n<li>\u4e00\u822c\u7684\u306a\u526f\u4f5c\u7528\u306e\u4f8b:\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u30c7\u30fc\u30bf\u3001\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30cb\u30f3\u30b0\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8981\u6c42\u306a\u3069<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528\u306e\u57fa\u672c\u7684\u306a\u4f7f\u7528\u6cd5\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8<\/li>\n\n\n\n<li>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u4f5c\u6210\u3068\u4f7f\u7528<\/li>\n\n\n\n<li>\u8907\u6570\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u30c7\u30fc\u30bf\u3092\u5171\u6709\u3059\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4f7f\u7528\u53c2\u7167\u30d5\u30c3\u30af\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528\u306e\u57fa\u672c\u7684\u306a\u4f7f\u7528\u6cd5\u53c2\u7167<\/li>\n\n\n\n<li>\u53c2\u7167\u306e\u4f5c\u6210\u3068\u53d6\u5f97<\/li>\n\n\n\n<li>\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u306e\u5909\u6570\u306e\u4fdd\u5b58\u3068\u30a2\u30af\u30bb\u30b9<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\n<ul class=\"wp-block-list\">\n<li>\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u3068\u306f<\/li>\n\n\n\n<li>\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u3092\u4f5c\u6210\u3057\u3066\u4f7f\u7528\u3059\u308b<\/li>\n\n\n\n<li>\u518d\u5229\u7528\u53ef\u80fd\u306a\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u88c5\u3059\u308b<\/li>\n\n\n\n<li>\u4f8b:\u30d5\u30a9\u30fc\u30e0\u51e6\u7406\u3001\u30c7\u30fc\u30bf\u53d6\u5f97\u306a\u3069<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>useCallback \u30d5\u30c3\u30af\u3068 useMemo \u30d5\u30c3\u30af\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u306e\u57fa\u672c\u7684\u306a\u4f7f\u7528\u6cd5<\/li>\n\n\n\n<li>useCallback \u3092\u4f7f\u7528\u3057\u3066\u95a2\u6570\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u9069\u5316\u3059\u308b<\/li>\n\n\n\n<li>\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u30e1\u30e2<\/li>\n\n\n\n<li>useMemo\u3092\u4f7f\u7528\u3057\u3066\u8a08\u7b97\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u9069\u5316\u3059\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u305d\u306e\u4ed6\u306e\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d5\u30c3\u30af\n<ul class=\"wp-block-list\">\n<li>useReducer: \u8907\u96d1\u306a\u72b6\u614b\u30ed\u30b8\u30c3\u30af\u3092\u7ba1\u7406\u3059\u308b<\/li>\n\n\n\n<li>\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u4f7f\u7528: \u30eb\u30fc\u30c8\u5185\u306e URL \u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b<\/li>\n\n\n\n<li>\u4f7f\u7528\u5c65\u6b74: \u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3067\u306e\u30da\u30fc\u30b8\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3<\/li>\n\n\n\n<li>\u4f7f\u7528\u5834\u6240: \u73fe\u5728\u306e URL \u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528\u52b9\u679c\u306e\u4e00\u822c\u7684\u306a\u843d\u3068\u3057\u7a74\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u8981\u7d04\u3068\u5c55\u958b\n<ul class=\"wp-block-list\">\n<li>\u53cd\u5fdc\u30d5\u30c3\u30af\u306e\u9577\u6240\u3068\u77ed\u6240\u306e\u6982\u8981<\/li>\n\n\n\n<li>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u53cd\u5fdc\u30d5\u30c3\u30af\u3092\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u65b9\u6cd5<\/li>\n\n\n\n<li>\u53cd\u5fdc\u30d5\u30c3\u30af\u3067\u3088\u308a\u591a\u304f\u306e\u53ef\u80fd\u6027\u3092\u63a2\u308b<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u306e\u6982\u8981\u306f\u3001React Hooks\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u30d3\u30c7\u30aa\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u30a2\u30a6\u30c8\u30e9\u30a4\u30f3\u3068\u3057\u3066\u5f79\u7acb\u3061\u3001\u5404\u30bb\u30af\u30b7\u30e7\u30f3\u306e\u8a73\u7d30\u306b\u57fa\u3065\u3044\u3066\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u8a18\u8ff0\u3057\u3001\u30d3\u30c7\u30aa\u3092\u9332\u753b\u3067\u304d\u307e\u3059\u3002 \u5404\u6982\u5ff5\u3092\u6bb5\u968e\u7684\u306b\u8aac\u660e\u3057\u3001\u5b66\u7fd2\u8005\u304cReact\u30d5\u30c3\u30af\u3092\u3088\u308a\u3088\u304f\u7406\u89e3\u3057\u3066\u9069\u7528\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u5b9f\u7528\u7684\u306a\u30b3\u30fc\u30c9\u4f8b\u3068\u4f8b\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3092\u5fd8\u308c\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002 \u79c1\u306f\u3042\u306a\u305f\u306e\u6210\u529f\u3092\u7948\u308a\u307e\u3059!<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>React\u30d5\u30c3\u30af\u306e\u80cc\u666f\u3068\u3001\u306a\u305cChatGPT\u306b\u767b\u5834\u3057\u305f\u306e\u304b\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>React\u30d5\u30c3\u30af\u306e\u524d\u306f\u3001React\u306f\u4e3b\u306b\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u30e6\u30fc\u30b6\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u69cb\u7bc9\u3057\u3066\u3044\u307e\u3057\u305f\u3002 \u30af\u30e9\u30b9 \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001\u7279\u306b\u5171\u6709\u72b6\u614b\u3001\u526f\u4f5c\u7528\u51e6\u7406\u3001\u304a\u3088\u3073\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8 \u30ed\u30b8\u30c3\u30af\u306e\u518d\u5229\u7528\u304c\u4f7f\u7528\u3055\u308c\u308b\u30b7\u30ca\u30ea\u30aa\u3067\u306f\u3001\u72b6\u614b\u30e1\u30bd\u30c3\u30c9\u3068\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb \u30e1\u30bd\u30c3\u30c9\u306e\u51e6\u7406\u306b\u304a\u3044\u3066\u7279\u5b9a\u306e\u8907\u96d1\u3055\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u30b3\u30fc\u30c9\u304c\u91cd\u8907\u3057\u3001\u4fdd\u5b88\u3068\u7406\u89e3\u304c\u56f0\u96e3\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u554f\u984c\u306b\u5bfe\u51e6\u3059\u308b\u305f\u3081\u306b\u3001React\u30c1\u30fc\u30e0\u306fReact 16.8\u3067React\u30d5\u30c3\u30af\u3092\u5c0e\u5165\u3057\u307e\u3057\u305f\u3002 \u30d5\u30c3\u30af\u306f\u3001\u30af\u30e9\u30b9\u3092\u66f8\u304b\u305a\u306bReact\u306e\u6a5f\u80fd\u3092\u4f7f\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u6a5f\u80fd\u7684\u306a\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u65b9\u6cd5\u3067\u3059\u3002 \u30d5\u30c3\u30af\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u72b6\u614b\u3068\u526f\u4f5c\u7528\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u4e00\u9023\u306e API \u3092\u63d0\u4f9b\u3057\u3001\u958b\u767a\u8005\u304c\u518d\u5229\u7528\u53ef\u80fd\u3067\u8ad6\u7406\u7684\u306b\u660e\u78ba\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u7c21\u5358\u306b\u8a18\u8ff0\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>React\u30d5\u30c3\u30af\u304c\u767b\u5834\u3057\u305f\u4e3b\u306a\u7406\u7531\u3068\u80cc\u666f\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30bf\u30a4\u30eb:\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306f\u3001\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u958b\u767a\u3067\u307e\u3059\u307e\u3059\u4eba\u6c17\u304c\u9ad8\u307e\u3063\u3066\u3044\u307e\u3059\u3002 \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3088\u308a\u3082\u5ba3\u8a00\u7684\u3067\u7c21\u6f54\u3067\u3042\u308a\u3001\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u30a2\u30a4\u30c7\u30a2\u3092\u3088\u308a\u9069\u5207\u306b\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002 React Hooks\u306e\u51fa\u73fe\u306b\u3088\u308a\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001\u72b6\u614b\u3084\u526f\u4f5c\u7528\u306e\u51e6\u7406\u306a\u3069\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u3088\u3046\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u3088\u308a\u591a\u304f\u306e\u6a5f\u80fd\u3092\u6301\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u306e\u518d\u5229\u7528\u306e\u96e3\u3057\u3055:\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u3092\u518d\u5229\u7528\u3059\u308b\u306b\u306f\u3001\u9ad8\u6b21\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3084\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u5c0f\u9053\u5177\u306a\u3069\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u6df1\u3044\u5165\u308c\u5b50\u3001\u5197\u9577\u306a\u30b3\u30fc\u30c9\u3001\u304a\u3088\u3073\u8907\u96d1\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u968e\u5c64\u3067\u306e\u7406\u89e3\u306e\u56f0\u96e3\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u30d5\u30c3\u30af\u306f\u30d5\u30c3\u30af\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u306e\u518d\u5229\u7528\u3092\u3088\u308a\u7c21\u6f54\u304b\u3064\u76f4\u611f\u7684\u306b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u306e\u7406\u89e3\u3068\u5b66\u7fd2\u306e\u96e3\u3057\u3055: \u30af\u30e9\u30b9 \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8 (componentDidMount\u3001componentDidUpdate \u306a\u3069) \u306e\u30e9\u30a4\u30d5 \u30b5\u30a4\u30af\u30eb \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u526f\u4f5c\u7528\u3084\u72b6\u614b\u306e\u66f4\u65b0\u3092\u51e6\u7406\u3059\u308b\u3068\u304d\u306b\u3001\u95a2\u9023\u3059\u308b\u30ed\u30b8\u30c3\u30af\u3092\u3055\u307e\u3056\u307e\u306a\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb \u30e1\u30bd\u30c3\u30c9\u306b\u5206\u6563\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30fc\u30c9\u306e\u8907\u96d1\u3055\u3068\u5b66\u7fd2\u30b3\u30b9\u30c8\u304c\u5897\u52a0\u3057\u307e\u3059\u3002 \u30d5\u30c3\u30af\u306b\u306f\u3001\u526f\u4f5c\u7528\u3068\u72b6\u614b\u306e\u66f4\u65b0\u306e\u30ed\u30b8\u30c3\u30af\u3092 1 \u304b\u6240\u306b\u6574\u7406\u3057\u3001\u30b3\u30fc\u30c9\u306e\u7406\u89e3\u3068\u4fdd\u5b88\u3092\u5bb9\u6613\u306b\u3059\u308b useEffect \u30d5\u30c3\u30af\u304c\u5c0e\u5165\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u72b6\u614b\u306e\u5171\u6709\u306e\u96e3\u3057\u3055: \u30af\u30e9\u30b9 \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u306f\u3001\u5171\u6709\u72b6\u614b\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u968e\u5c64\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u307e\u305f\u306f Redux \u306a\u3069\u306e\u30b0\u30ed\u30fc\u30d0\u30eb\u72b6\u614b\u7ba1\u7406\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u3066\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u8907\u96d1\u3055\u304c\u5897\u3057\u3001\u3088\u308a\u591a\u304f\u306e\u6982\u5ff5\u304c\u5c0e\u5165\u3055\u308c\u307e\u3059\u3002 \u30d5\u30c3\u30af\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u72b6\u614b\u3092\u7c21\u5358\u306b\u5171\u6709\u3067\u304d\u308b\u3088\u3046\u306b useContext \u30d5\u30c3\u30af\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u8981\u7d04\u3059\u308b\u3068\u3001React Hooks\u306f\u3001\u72b6\u614b\u7ba1\u7406\u3001\u526f\u4f5c\u7528\u51e6\u7406\u3001\u304a\u3088\u3073\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u306e\u518d\u5229\u7528\u306b\u304a\u3051\u308b\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u767b\u5834\u3057\u307e\u3057\u305f\u3002 \u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u30a2\u30a4\u30c7\u30a2\u3092\u7d39\u4ecb\u3057\u3001\u95a2\u6570\u578b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u6a5f\u80fd\u3092\u6301\u3061\u3001\u30b3\u30fc\u30c9\u306e\u8aad\u307f\u3084\u3059\u3055\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u3092\u53ef\u80fd\u306b\u3059\u308b\u4e00\u9023\u306e\u7c21\u6f54\u306aAPI\u3092\u63d0\u4f9b\u3057\u307e\u3059<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>React Hooks\u304c\u5f93\u6765\u306eChatGPT\u3088\u308a\u3082\u512a\u308c\u3066\u3044\u308b\u7406\u7531\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>React \u30d5\u30c3\u30af\u306b\u306f\u3001\u5f93\u6765\u306e\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u6bd4\u3079\u3066\u6b21\u306e\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0: React \u30d5\u30c3\u30af\u306f\u3001\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u4f7f\u7528\u3057\u3066\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u69cb\u7bc9\u3059\u308b\u3053\u3068\u3092\u5968\u52b1\u3057\u307e\u3059\u3002 \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001\u30af\u30e9\u30b9 \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3088\u308a\u3082\u7c21\u6f54\u3067\u3001\u5ba3\u8a00\u7684\u3067\u3001\u8aad\u307f\u3084\u3059\u3044\u3082\u306e\u3067\u3059\u3002 \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u5b9a\u578b\u30b3\u30fc\u30c9\u304c\u6e1b\u308a\u3001\u3088\u308a\u30af\u30ea\u30fc\u30f3\u3067\u4fdd\u5b88\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u72b6\u614b\u7ba1\u7406: \u30af\u30e9\u30b9 \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u72b6\u614b\u3092\u7ba1\u7406\u3059\u308b\u306b\u306f this.state \u3068 this.setState \u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u8907\u6570\u306e\u72b6\u614b\u3092\u7ba1\u7406\u3059\u308b\u3068\u30b3\u30fc\u30c9\u304c\u5197\u9577\u306b\u306a\u308a\u307e\u3059\u3002 React Hooks \u3067\u306f\u3001\u72b6\u614b\u7ba1\u7406\u3092\u3088\u308a\u76f4\u611f\u7684\u304b\u3064\u30b7\u30f3\u30d7\u30eb\u306b\u3059\u308b\u305f\u3081\u306b useState \u30d5\u30c3\u30af\u304c\u5c0e\u5165\u3055\u308c\u3066\u3044\u307e\u3059\u3002 useState \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u72b6\u614b\u3092\u5ba3\u8a00\u304a\u3088\u3073\u66f4\u65b0\u3067\u304d\u3001\u8907\u6570\u306e useState \u3092\u4f7f\u7528\u3057\u3066\u8907\u6570\u306e\u72b6\u614b\u5909\u6570\u3092\u540c\u6642\u306b\u7ba1\u7406\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u526f\u4f5c\u7528\u306e\u51e6\u7406:\u526f\u4f5c\u7528(\u30c7\u30fc\u30bf\u306e\u53d6\u5f97\u3001\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u3001\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u306a\u3069)\u306f\u3001\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u3055\u307e\u3056\u307e\u306a\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u30e1\u30bd\u30c3\u30c9\u3067\u51e6\u7406\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3001\u30b3\u30fc\u30c9\u304c\u6563\u5728\u3057\u3001\u7406\u89e3\u3057\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002 React Hooks \u3067\u306f\u3001\u526f\u4f5c\u7528\u30ed\u30b8\u30c3\u30af\u3092 1 \u304b\u6240\u306b\u6574\u7406\u3059\u308b\u305f\u3081\u306e useEffect \u30d5\u30c3\u30af\u304c\u5c0e\u5165\u3055\u308c\u3066\u3044\u307e\u3059\u3002 useEffect \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u526f\u4f5c\u7528\u306e\u8d77\u52d5\u3001\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u3001\u4f9d\u5b58\u95a2\u4fc2\u306e\u7ba1\u7406\u306a\u3069\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u526f\u4f5c\u7528\u3092\u51e6\u7406\u3067\u304d\u308b\u305f\u3081\u3001\u30b3\u30fc\u30c9\u3092\u3088\u308a\u7126\u70b9\u3092\u7d5e\u3063\u3066\u7406\u89e3\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u306e\u591a\u91cd\u5316:\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u3092\u518d\u5229\u7528\u3059\u308b\u306b\u306f\u3001\u9ad8\u6b21\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3084\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u5c0f\u9053\u5177\u306a\u3069\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u968e\u5c64\u3068\u30b3\u30fc\u30c9\u306e\u8907\u96d1\u3055\u3092\u5897\u3057\u307e\u3059\u3002 React Hooks\u306f\u3001\u30d5\u30c3\u30af\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u306e\u518d\u5229\u7528\u3092\u3088\u308a\u7c21\u6f54\u3067\u76f4\u611f\u7684\u306b\u3057\u307e\u3059\u3002 \u3044\u304f\u3064\u304b\u306e\u5171\u901a\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u3092\u518d\u5229\u7528\u53ef\u80fd\u306a\u95a2\u6570\u306b\u62bd\u51fa\u3059\u308b\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u3092\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316: \u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u306f\u3001\u4e0d\u8981\u306a\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u306b\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u306b shouldComponentUpdate \u307e\u305f\u306f PureComponent \u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u306f\u3001React\u306f\u81ea\u52d5\u7684\u306b\u6d45\u3044\u6bd4\u8f03\u3092\u884c\u3044\u3001\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u304c\u5fc5\u8981\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u307e\u3059\u3002 \u3055\u3089\u306b\u3001React Hooks \u306f\u3001\u95a2\u6570\u3068\u8a08\u7b97\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306e useCallback \u3068 useMemo \u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30c6\u30b9\u30c8\u5bb9\u6613\u6027\u306e\u5411\u4e0a: \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001\u30af\u30e9\u30b9 \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3088\u308a\u3082\u5358\u4f53\u30c6\u30b9\u30c8\u304c\u5bb9\u6613\u3067\u3059\u3002 \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u5165\u529b\u3068\u51fa\u529b\u306e\u307f\u306b\u7126\u70b9\u3092\u5f53\u3066\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3068\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u3092\u542b\u307e\u306a\u3044\u305f\u3081\u3001\u5358\u4f53\u30c6\u30b9\u30c8\u306e\u8a18\u8ff0\u3068\u5b9f\u884c\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5168\u4f53\u3068\u3057\u3066\u3001React Hooks\u306b\u306f\u3001\u5f93\u6765\u306e\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3088\u308a\u3082\u7c21\u6f54\u3067\u76f4\u611f\u7684\u3067\u3001\u4fdd\u5b88\u3068\u30c6\u30b9\u30c8\u304c\u5bb9\u6613\u3067\u3042\u308b\u3068\u3044\u3046\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u308c\u306f\u3001\u958b\u767a\u8005\u304c\u8907\u96d1\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u69cb\u7bc9\u3057\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u3092\u51e6\u7406\u3059\u308b\u3053\u3068\u3092\u5bb9\u6613\u306b\u3059\u308b\u3001\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3078\u306e\u3088\u308a\u30e2\u30c0\u30f3\u3067\u6a5f\u80fd\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>React HooksChatGPT\u3068\u306f\u4f55\u304b\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>React \u30d5\u30c3\u30af\u306f\u3001React\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u4e00\u9023\u306e\u6a5f\u80fd\u3067\u3042\u308a\u3001\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u8a18\u8ff0\u3057\u306a\u304f\u3066\u3082\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u72b6\u614b\u3001\u526f\u4f5c\u7528\u3001\u304a\u3088\u3073\u305d\u306e\u4ed6\u306eReact\u6a5f\u80fd\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 \u30d5\u30c3\u30af\u306f\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u30d1\u30e9\u30c0\u30a4\u30e0\u3067\u3042\u308a\u3001\u30b3\u30fc\u30c9\u3092\u3088\u308a\u30af\u30ea\u30fc\u30f3\u3067\u8aad\u307f\u3084\u3059\u304f\u3001\u7406\u89e3\u3068\u4fdd\u5b88\u3092\u5bb9\u6613\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>React Hooks \u306b\u306f\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u3055\u307e\u3056\u307e\u306a\u6a5f\u80fd\u3092\u5c0e\u5165\u304a\u3088\u3073\u7ba1\u7406\u3059\u308b\u305f\u3081\u306b\u3001\u30d5\u30c3\u30af\u95a2\u6570\u3068\u547c\u3070\u308c\u308b\u5b9a\u7fa9\u6e08\u307f\u306e\u95a2\u6570\u304c\u3044\u304f\u3064\u304b\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u30d5\u30c3\u30af\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u72b6\u614b\u3092\u5ba3\u8a00\u3057\u305f\u308a\u3001\u526f\u4f5c\u7528\u3092\u30b5\u30d6\u30b9\u30af\u30e9\u30a4\u30d6\u3057\u305f\u308a\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3092\u51e6\u7406\u3057\u305f\u308a\u3001\u30eb\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u305f\u308a\u3067\u304d\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u30d5\u30c3\u30af\u95a2\u6570\u306f\u3059\u3079\u3066\u3001useState\u3001useEffect\u3001useContext \u306a\u3069\u306e &#8220;use&#8221; \u3067\u59cb\u307e\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u53cd\u5fdc\u30d5\u30c3\u30af\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>useState: useState \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u72b6\u614b\u3092\u5ba3\u8a00\u304a\u3088\u3073\u7ba1\u7406\u3067\u304d\u307e\u3059\u3002 \u73fe\u5728\u306e\u72b6\u614b\u3068\u66f4\u65b0\u3055\u308c\u305f\u72b6\u614b\u3092\u542b\u3080\u95a2\u6570\u306e\u914d\u5217\u3092\u8fd4\u3057\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u72b6\u614b\u5024\u3092\u4f7f\u7528\u304a\u3088\u3073\u66f4\u65b0\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>useEffect: UseEffect \u30d5\u30c3\u30af\u306f\u3001\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3 \u30c7\u30fc\u30bf\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8981\u6c42\u3001\u30a4\u30d9\u30f3\u30c8 \u30ea\u30b9\u30cb\u30f3\u30b0\u306a\u3069\u306e\u526f\u4f5c\u7528\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u526f\u4f5c\u7528\u95a2\u6570\u3068\u4f9d\u5b58\u95a2\u4fc2\u306e\u914d\u5217\u3092\u53d7\u3051\u53d6\u308a\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u305f\u5f8c\u306b\u526f\u4f5c\u7528\u95a2\u6570\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>useContext: useContext \u30d5\u30c3\u30af\u306f\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3092\u4f7f\u7528\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u30b3\u30f3\u30c6\u30ad\u30b9\u30c8 \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3068\u3057\u3066\u53d7\u3051\u53d6\u308a\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u73fe\u5728\u306e\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>useRef: useRef \u30d5\u30c3\u30af\u306f\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u53ef\u5909\u53c2\u7167\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u5909\u66f4\u53ef\u80fd\u306a\u53c2\u7167\u3092\u542b\u307f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u5f8c\u3082\u5909\u66f4\u3055\u308c\u306a\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>use\u30b3\u30fc\u30eb\u30d0\u30c3\u30af: useCallback \u30d5\u30c3\u30af\u306f\u3001\u95a2\u6570\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3068\u4f9d\u5b58\u95a2\u4fc2\u306e\u914d\u5217\u3092\u53d7\u3051\u53d6\u308a\u3001\u30e1\u30e2\u30ea\u99c6\u52d5\u578b\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>useMemo: UseMemo \u30d5\u30c3\u30af\u306f\u3001\u8a08\u7b97\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u8a08\u7b97\u95a2\u6570\u3068\u4f9d\u5b58\u95a2\u4fc2\u306e\u914d\u5217\u3092\u53d7\u3051\u53d6\u308a\u3001\u8a08\u7b97\u7d50\u679c\u306e\u30e1\u30e2\u30ea\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>useReducer: UseReducer\u30d5\u30c3\u30af\u306f\u3001\u8907\u96d1\u306a\u72b6\u614b\u30ed\u30b8\u30c3\u30af\u3067\u72b6\u614b\u3092\u7ba1\u7406\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u30ec\u30b8\u30e5\u30fc\u30b5\u95a2\u6570\u3001\u521d\u671f\u72b6\u614b\u3001\u304a\u3088\u3073\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u521d\u671f\u5316\u95a2\u6570\u3092\u53d7\u3051\u53d6\u308a\u3001\u73fe\u5728\u306e\u72b6\u614b\u3068\u30c7\u30a3\u30b9\u30d1\u30c3\u30c1\u95a2\u6570\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>useParams: useParams \u30d5\u30c3\u30af\u306f\u3001\u30eb\u30fc\u30c8\u5185\u306e URL \u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li>useHistory: useHistory \u30d5\u30c3\u30af\u306f\u3001\u30eb\u30fc\u30c8\u3067\u306e\u30da\u30fc\u30b8\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li>useLocation: useLocation \u30d5\u30c3\u30af\u306f\u3001\u73fe\u5728\u306e URL \u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>React \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30d1\u30ef\u30fc\u3068\u67d4\u8edf\u6027\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u30d5\u30c3\u30af\u306e\u5c0e\u5165\u306b\u3088\u308a\u3001React\u306e\u30b3\u30fc\u30c9\u304c\u3059\u3063\u304d\u308a\u3068\u8aad\u307f\u3084\u3059\u304f\u306a\u308a\u3001\u30c6\u30b9\u30c8\u3068\u4fdd\u5b88\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>React HooksChatGPT\u3092\u4f7f\u7528\u3059\u308b\u7406\u7531\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>React\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u4e3b\u306a\u7406\u7531\u306f\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u3088\u308a\u7c21\u6f54\u3067\u8aad\u307f\u3084\u3059\u3044: React \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3088\u308a\u3082\u30b3\u30fc\u30c9\u3092\u7c21\u6f54\u3067\u660e\u78ba\u3067\u7406\u89e3\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002 \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u72b6\u614b\u3001\u526f\u4f5c\u7528\u3001\u304a\u3088\u3073\u305d\u306e\u4ed6\u306eReact\u6a5f\u80fd\u3092\u76f4\u63a5\u5ba3\u8a00\u304a\u3088\u3073\u7ba1\u7406\u3067\u304d\u308b\u305f\u3081\u3001\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u5b9a\u578b\u30b3\u30fc\u30c9\u3068\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u30e1\u30bd\u30c3\u30c9\u3092\u56de\u907f\u3057\u3001\u30b3\u30fc\u30c9\u3092\u3088\u308a\u5408\u7406\u5316\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0: React \u30d5\u30c3\u30af\u306f\u3001\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u4f7f\u7528\u3057\u3066\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u69cb\u7bc9\u3059\u308b\u3053\u3068\u3092\u5968\u52b1\u3057\u307e\u3059\u3002 \u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u306f\u3001\u518d\u5229\u7528\u6027\u3001\u30c6\u30b9\u30c8\u5bb9\u6613\u6027\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3001\u4fdd\u5b88\u6027\u306a\u3069\u3001\u591a\u304f\u306e\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002 \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u8003\u3048\u65b9\u3092\u3088\u308a\u81ea\u7136\u306b\u63a1\u7528\u3067\u304d\u3001\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u526f\u4f5c\u7528\u3084\u7406\u89e3\u3067\u304d\u306a\u3044\u30ed\u30b8\u30c3\u30af\u306a\u3057\u3067\u7d14\u7c8b\u306b\u6a5f\u80fd\u7684\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u72b6\u614b\u7ba1\u7406\u3068\u5171\u6709: \u30d5\u30c3\u30af\u306f\u3001useState \u3084 useContext \u306a\u3069\u306e\u30d5\u30c3\u30af\u95a2\u6570\u3092\u63d0\u4f9b\u3057\u3001\u72b6\u614b\u7ba1\u7406\u3068\u5171\u6709\u3092\u3088\u308a\u7c21\u5358\u304b\u3064\u76f4\u611f\u7684\u306b\u3057\u307e\u3059\u3002 \u30af\u30e9\u30b9 \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067 this.state \u3068 this.setState \u3092\u4f7f\u7528\u3059\u308b\u4ee3\u308f\u308a\u306b\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067 useState \u3092\u4f7f\u7528\u3057\u3066\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u72b6\u614b\u3092\u5ba3\u8a00\u304a\u3088\u3073\u66f4\u65b0\u3067\u304d\u307e\u3059\u3002 useContext \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u72b6\u614b\u3092\u7c21\u5358\u306b\u5171\u6709\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30ed\u30b8\u30c3\u30af\u591a\u91cd\u5316:\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u306e\u518d\u5229\u7528\u306b\u306f\u901a\u5e38\u3001\u9ad8\u968e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3084\u30ec\u30f3\u30c0\u30fc\u30d7\u30ed\u30c3\u30d7\u306a\u3069\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u3044\u304f\u3064\u304b\u306e\u5171\u901a\u30ed\u30b8\u30c3\u30af\u3092\u518d\u5229\u7528\u53ef\u80fd\u306a\u95a2\u6570\u306b\u7c21\u5358\u306b\u62bd\u51fa\u3067\u304d\u307e\u3059\u3002 \u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u3092\u62bd\u8c61\u5316\u3057\u3066\u30ab\u30d7\u30bb\u30eb\u5316\u3057\u3001\u7570\u306a\u308b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u5171\u6709\u304a\u3088\u3073\u518d\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u306e\u6539\u5584: React Hooks \u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306b\u3001useEffect\u3001useCallback\u3001useMemo \u306a\u3069\u306e\u30d5\u30c3\u30af\u95a2\u6570\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 useEffect \u3092\u4f7f\u7528\u3057\u3066\u526f\u4f5c\u7528\u3092\u51e6\u7406\u3057\u3001\u4f9d\u5b58\u95a2\u4fc2\u914d\u5217\u3067\u95a2\u9023\u3059\u308b\u4f9d\u5b58\u95a2\u4fc2\u3092\u6307\u5b9a\u3057\u3066\u3001\u4e0d\u8981\u306a\u91cd\u8907\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002 useCallback \u3068 useMemo \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u3068\u8a08\u7b97\u7d50\u679c\u304c\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u3001\u4e0d\u8981\u306a\u518d\u8a08\u7b97\u304c\u56de\u907f\u3055\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30c6\u30b9\u30c8\u5bb9\u6613\u6027\u306e\u5411\u4e0a: \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u5165\u529b\u3068\u51fa\u529b\u306b\u91cd\u70b9\u3092\u7f6e\u304d\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3068\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u3092\u542b\u307e\u306a\u3044\u305f\u3081\u3001\u30d5\u30c3\u30af\u3067\u8a18\u8ff0\u3055\u308c\u305f\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001\u30af\u30e9\u30b9 \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3088\u308a\u3082\u5358\u4f53\u30c6\u30b9\u30c8\u304c\u5bb9\u6613\u3067\u3059\u3002 \u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u30e1\u30bd\u30c3\u30c9\u3068\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u30e1\u30bd\u30c3\u30c9\u3092\u6c17\u306b\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u5165\u529b\u3068\u51fa\u529b\u3092\u76f4\u63a5\u30c6\u30b9\u30c8\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5168\u4f53\u3068\u3057\u3066\u3001React Hooks\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30b3\u30fc\u30c9\u3092\u3088\u308a\u7c21\u6f54\u3067\u8aad\u307f\u3084\u3059\u304f\u3001\u7406\u89e3\u3001\u4fdd\u5b88\u3001\u30c6\u30b9\u30c8\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002 \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u5bfe\u3059\u308b\u3088\u308a\u30e2\u30c0\u30f3\u3067\u6a5f\u80fd\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u63d0\u4f9b\u3057\u3001React\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u3088\u308a\u81ea\u7136\u306b\u8a18\u8ff0\u3057\u3001\u72b6\u614b\u7ba1\u7406\u3001\u30ed\u30b8\u30c3\u30af\u306e\u518d\u5229\u7528\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u306a\u3069\u306e\u554f\u984c\u3092\u3088\u308a\u9069\u5207\u306b\u51e6\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>\u53cd\u5fdc\u30d5\u30c3\u30af\u30c1\u30e3\u30c3\u30c8GPT\u306e\u5229\u70b9\u3068\u5236\u9650\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>\u53cd\u5fdc\u30d5\u30c3\u30af\u306b\u306f\u6b21\u306e\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u306e\u7c21\u7d20\u5316: \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u72b6\u614b\u7ba1\u7406\u3001\u526f\u4f5c\u7528\u51e6\u7406\u3001\u304a\u3088\u3073\u305d\u306e\u4ed6\u306e\u30ed\u30b8\u30c3\u30af\u3092\u4e00\u5143\u5316\u3057\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u3092\u3088\u308a\u660e\u78ba\u3067\u7406\u89e3\u3057\u3084\u3059\u304f\u3057\u307e\u3059\u3002 \u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u6bd4\u8f03\u3057\u3066\u3001Hooks\u306f\u591a\u304f\u306e\u5b9a\u578b\u30b3\u30fc\u30c9\u3092\u6392\u9664\u3057\u3001\u30b3\u30fc\u30c9\u3092\u3088\u308a\u7c21\u6f54\u306b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u8aad\u307f\u3084\u3059\u3055\u3068\u4fdd\u5b88\u6027\u306e\u5411\u4e0a: \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u30ed\u30b8\u30c3\u30af\u3092\u4e0a\u304b\u3089\u4e0b\u306b\u8a18\u8ff0\u3067\u304d\u308b\u305f\u3081\u3001\u30b3\u30fc\u30c9\u304c\u8aad\u307f\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002 \u5404 Hook \u95a2\u6570\u306f 1 \u3064\u306e\u7279\u5b9a\u306e\u95a2\u6570\u306e\u307f\u306b\u7126\u70b9\u3092\u5f53\u3066\u3066\u3044\u308b\u305f\u3081\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30ed\u30b8\u30c3\u30af\u306e\u7406\u89e3\u3068\u4fdd\u5b88\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002 \u30d5\u30c3\u30af\u306f\u307e\u305f\u3001\u30b3\u30fc\u30c9\u3092\u3088\u308a\u5ba3\u8a00\u7684\u3067\u7406\u89e3\u3057\u3084\u3059\u304f\u3059\u308b\u305f\u3081\u306b\u3001\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u8003\u3048\u65b9\u306e\u4f7f\u7528\u3092\u5968\u52b1\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30ed\u30b8\u30c3\u30af\u306e\u518d\u5229\u7528\u306e\u5411\u4e0a:\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u3092\u518d\u5229\u7528\u53ef\u80fd\u306a\u95a2\u6570\u306b\u62bd\u8c61\u5316\u3057\u307e\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u7570\u306a\u308b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u540c\u3058\u30ed\u30b8\u30c3\u30af\u3092\u5171\u6709\u3067\u304d\u308b\u305f\u3081\u3001\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002 \u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30ed\u30b8\u30c3\u30af\u306e\u591a\u91cd\u5316\u304c\u3088\u308a\u76f4\u611f\u7684\u3067\u7c21\u5358\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30c6\u30b9\u30c8\u5bb9\u6613\u6027\u306e\u5411\u4e0a: \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001\u30af\u30e9\u30b9 \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3088\u308a\u3082\u5358\u4f53\u30c6\u30b9\u30c8\u304c\u5bb9\u6613\u3067\u3059\u3002 \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u8a18\u8ff0\u3055\u308c\u305f\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001\u5165\u529b\u3068\u51fa\u529b\u306b\u7126\u70b9\u3092\u5f53\u3066\u3066\u304a\u308a\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3068\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u30e1\u30bd\u30c3\u30c9\u3092\u542b\u307e\u306a\u3044\u305f\u3081\u3001\u30c6\u30b9\u30c8\u304c\u3088\u308a\u76f4\u611f\u7684\u3067\u7c21\u5358\u306b\u306a\u308a\u307e\u3059\u3002 \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8 \u30ed\u30b8\u30c3\u30af\u306b\u5bfe\u3059\u308b\u5358\u4f53\u30c6\u30b9\u30c8\u3092\u3088\u308a\u7c21\u5358\u306b\u8a18\u8ff0\u304a\u3088\u3073\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u306e\u5411\u4e0a: React \u30d5\u30c3\u30af\u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u306b\u5f79\u7acb\u3064 useEffect\u3001useCallback\u3001useMemo \u306a\u3069\u306e\u30d5\u30c3\u30af\u95a2\u6570\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 useEffect \u3092\u4f7f\u7528\u3057\u3066\u526f\u4f5c\u7528\u3092\u51e6\u7406\u3057\u3001\u4f9d\u5b58\u95a2\u4fc2\u914d\u5217\u3067\u95a2\u9023\u3059\u308b\u4f9d\u5b58\u95a2\u4fc2\u3092\u6307\u5b9a\u3057\u3066\u3001\u4e0d\u8981\u306a\u91cd\u8907\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002 useCallback \u3068 useMemo \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u3068\u8a08\u7b97\u7d50\u679c\u304c\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u3001\u4e0d\u8981\u306a\u518d\u8a08\u7b97\u304c\u56de\u907f\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>React \u30d5\u30c3\u30af\u306b\u306f\u591a\u304f\u306e\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u3044\u304f\u3064\u304b\u306e\u5236\u9650\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u307e\u3060\u958b\u767a\u4e2d:React Hooks\u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u3001\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u307e\u3060\u6bd4\u8f03\u7684\u65b0\u3057\u3044\u6a5f\u80fd\u3067\u3042\u308a\u3001\u4e0d\u5b89\u5b9a\u3067\u5909\u66f4\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u3057\u305f\u304c\u3063\u3066\u3001\u5927\u898f\u6a21\u307e\u305f\u306f\u91cd\u8981\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u4f7f\u7528\u524d\u306b\u9069\u5207\u306a\u30c6\u30b9\u30c8\u3068\u8a55\u4fa1\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u5b66\u7fd2\u66f2\u7dda:\u4ee5\u524d\u306f\u4e3b\u306b\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3044\u305f\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u3001\u30d5\u30c3\u30af\u306e\u5b66\u7fd2\u3068\u9069\u5fdc\u306b\u306f\u3042\u308b\u7a0b\u5ea6\u306e\u6642\u9593\u3068\u5b66\u7fd2\u30b3\u30b9\u30c8\u304c\u5fc5\u8981\u3067\u3057\u305f\u3002 \u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u6bd4\u8f03\u3057\u3066\u3001\u30d5\u30c3\u30af\u306f\u65b0\u3057\u3044\u6982\u5ff5\u3068\u305d\u306e\u4f7f\u7528\u65b9\u6cd5\u3092\u5c0e\u5165\u3057\u307e\u3059\u304c\u3001\u8abf\u6574\u3068\u518d\u8003\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u5236\u9650: React \u30d5\u30c3\u30af\u306f\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u306e\u307f\u4f7f\u7528\u3067\u304d\u3001\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u306f\u4f7f\u7528\u3067\u304d\u307e\u305b\u3093\u3002 \u3064\u307e\u308a\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u591a\u6570\u306e\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u3042\u308b\u5834\u5408\u3001\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u306b\u306f\u305d\u308c\u3089\u3092\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u5909\u63db\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u5171\u6709\u72b6\u614b\u306e\u7ba1\u7406\u306e\u96e3\u3057\u3055:React\u30d5\u30c3\u30af\u306f\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u5171\u6709\u72b6\u614b\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306euseContext\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304c\u3001\u3088\u308a\u591a\u304f\u306e\u4eba\u306b\u3068\u3063\u3066\u3088\u308a\u91cd\u8981\u3067\u3059<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>\u30c1\u30e3\u30c3\u30c8GPT\u3092\u7d9a\u3051\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>React \u30d5\u30c3\u30af\u306f\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u5171\u6709\u72b6\u614b\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306e useContext \u3092\u63d0\u4f9b\u3057\u307e\u3059\u304c\u3001Redux \u3084 MobX \u306a\u3069\u306e\u72b6\u614b\u7ba1\u7406\u30e9\u30a4\u30d6\u30e9\u30ea\u306a\u3069\u3001\u8907\u6570\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u306e\u72b6\u614b\u5171\u6709\u3084\u66f4\u65b0\u306a\u3069\u3001\u3088\u308a\u8907\u96d1\u306a\u5171\u6709\u72b6\u614b\u7ba1\u7406\u306b\u306f\u8ffd\u52a0\u306e\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"5\">\n<li>\u7834\u58ca\u7684\u5909\u66f4: React \u30d5\u30c3\u30af\u306e\u5c0e\u5165\u306b\u3088\u308a\u3001\u3044\u304f\u3064\u304b\u306e\u7834\u58ca\u7684\u5909\u66f4\u304c\u3082\u305f\u3089\u3055\u308c\u307e\u3057\u305f\u3002 \u4ee5\u524d\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306eReact\u3067\u306f\u3001\u958b\u767a\u8005\u306f\u4e3b\u306b\u958b\u767a\u306b\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u65e2\u5b58\u306e\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u3068\u8abf\u6574\u306b\u5fc5\u8981\u306a\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3057\u305f\u3002 \u3053\u308c\u306f\u3001\u65e2\u5b58\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3068\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u306b\u3044\u304f\u3064\u304b\u306e\u8ab2\u984c\u3092\u3082\u305f\u3089\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30d5\u30c3\u30af\u306e\u4f7f\u7528\u30eb\u30fc\u30eb:React \u30d5\u30c3\u30af\u306b\u306f\u3001\u6761\u4ef6\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3084\u30eb\u30fc\u30d7\u3067\u306f\u306a\u304f\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u4e0a\u3067\u4f7f\u7528\u3059\u308b\u306a\u3069\u3001\u3044\u304f\u3064\u304b\u306e\u4f7f\u7528\u30eb\u30fc\u30eb\u304c\u3042\u308a\u307e\u3059\u3002 \u30d5\u30c3\u30af\u3092\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u306b\u306f\u3001\u3053\u308c\u3089\u306e\u30eb\u30fc\u30eb\u306e\u9075\u5b88\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u304c\u3001\u521d\u5fc3\u8005\u3084\u30c1\u30fc\u30e0\u304c\u30eb\u30fc\u30eb\u306b\u6163\u308c\u3066\u5f93\u3046\u307e\u3067\u306b\u6642\u9593\u304c\u304b\u304b\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u3044\u304f\u3064\u304b\u306e\u5236\u9650\u306f\u3042\u308a\u307e\u3059\u304c\u3001React\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u91cd\u8981\u306a\u6a5f\u80fd\u3067\u3042\u308bReact Hooks\u306f\u3001\u958b\u767a\u8005\u306b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u3088\u308a\u826f\u3044\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 \u30d5\u30c3\u30af\u3092\u8ce2\u304f\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30fc\u30c9\u3092\u3059\u3063\u304d\u308a\u3068\u8aad\u307f\u3084\u3059\u304f\u3057\u3001\u4fdd\u5b88\u3068\u30c6\u30b9\u30c8\u3092\u5bb9\u6613\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u65b0\u3057\u3044\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3084\u3042\u308b\u7a0b\u5ea6\u306e\u7d4c\u9a13\u3092\u6301\u3064\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u3001React Hooks\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u306f\u5f37\u529b\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3059\u3002 \u65e2\u5b58\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u30d5\u30c3\u30af\u3092\u5f90\u3005\u306b\u5c0e\u5165\u3057\u3066\u3001\u30b3\u30fc\u30c9\u306e\u54c1\u8cea\u3068\u958b\u767a\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>React Hooks\u304cChatGPT\u3068\u540c\u6642\u306bRedux\u3067\u4f7f\u7528\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>\u306f\u3044\u3001React\u30d5\u30c3\u30af\u306fRedux\u3068\u540c\u6642\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 Redux\u306f\u30b9\u30bf\u30f3\u30c9\u30a2\u30ed\u30f3\u306e\u72b6\u614b\u7ba1\u7406\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3042\u308a\u3001React Hooks\u306f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u306e\u72b6\u614b\u3068\u526f\u4f5c\u7528\u3092\u51e6\u7406\u3059\u308bReact\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u4e00\u90e8\u3067\u3059\u3002 \u3053\u306e 2 \u3064\u306f\u9023\u643a\u3057\u3066\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u72b6\u614b\u7ba1\u7406\u3068\u30ed\u30fc\u30ab\u30eb\u72b6\u614b\u7ba1\u7406\u306e\u30d9\u30b9\u30c8 \u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e00\u822c\u306b\u3001Redux\u306f\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u72b6\u614b\u3092\u7ba1\u7406\u3057\u305f\u308a\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u72b6\u614b\u3092\u5171\u6709\u3057\u305f\u308a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306b\u5f37\u529b\u306a\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3067\u3059\u3002 Redux\u3092\u4f7f\u7528\u3057\u3066\u30b0\u30ed\u30fc\u30d0\u30eb\u30ea\u30dd\u30b8\u30c8\u30ea\u3092\u4f5c\u6210\u3057\u3001useSelector\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u30ea\u30dd\u30b8\u30c8\u30ea\u304b\u3089\u76ee\u7684\u306e\u72b6\u614b\u3092\u9078\u629e\u3067\u304d\u307e\u3059\u3002 \u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001React\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306eRedux\u30ea\u30dd\u30b8\u30c8\u30ea\u306e\u72b6\u614b\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3066\u66f4\u65b0\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u540c\u6642\u306b\u3001React\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u306e\u30ed\u30fc\u30ab\u30eb\u72b6\u614b\u3092\u7ba1\u7406\u3067\u304d\u307e\u3059\u3002 useState \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u3001Redux \u30ea\u30dd\u30b8\u30c8\u30ea\u5185\u306e\u30b0\u30ed\u30fc\u30d0\u30eb\u72b6\u614b\u304b\u3089\u72ec\u7acb\u3057\u305f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u306e\u72b6\u614b\u3092\u5ba3\u8a00\u304a\u3088\u3073\u66f4\u65b0\u3067\u304d\u307e\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u3059\u3079\u3066\u306e\u72b6\u614b\u3092Redux\u30ea\u30dd\u30b8\u30c8\u30ea\u306b\u914d\u7f6e\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u56fa\u6709\u306e\u72b6\u614b\u3092\u7dad\u6301\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>React \u30d5\u30c3\u30af\u3068 Redux \u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u3001\u30cb\u30fc\u30ba\u306b\u5408\u3063\u305f\u9069\u5207\u306a\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u9078\u629e\u3067\u304d\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001\u7279\u5b9a\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u5bc6\u63a5\u306b\u95a2\u9023\u3059\u308b\u4e00\u90e8\u306e\u72b6\u614b\u306fuseState\u3092\u4f7f\u7528\u3057\u3066\u7ba1\u7406\u3067\u304d\u307e\u3059\u304c\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u5171\u6709\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u30b0\u30ed\u30fc\u30d0\u30eb\u72b6\u614b\u306fRedux\u3092\u4f7f\u7528\u3057\u3066\u7ba1\u7406\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3055\u3089\u306b\u3001React Redux\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u3001\u30d5\u30c3\u30af\u3067Redux\u95a2\u9023\u306e\u6a5f\u80fd\u3092\u7c21\u5358\u306b\u4f7f\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u3001useDispatch\u3084useStore\u306a\u3069\u306e\u7279\u5b9a\u306e\u30d5\u30c3\u30af\u3092\u30d5\u30c3\u30af\u306b\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u8981\u7d04\u3059\u308b\u3068\u3001React Hooks\u3068Redux\u306f\u9023\u643a\u3057\u3066\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u306e\u30b0\u30ed\u30fc\u30d0\u30eb\u72b6\u614b\u3068\u30ed\u30fc\u30ab\u30eb\u72b6\u614b\u306e\u4e21\u65b9\u3092\u7ba1\u7406\u3067\u304d\u308b\u67d4\u8edf\u306a\u72b6\u614b\u7ba1\u7406\u30b9\u30ad\u30fc\u30e0\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u30cb\u30fc\u30ba\u306b\u57fa\u3065\u3044\u3066\u9069\u5207\u306a\u72b6\u614b\u7ba1\u7406\u6226\u7565\u3092\u9078\u629e\u3057\u3001\u30b3\u30fc\u30c9\u306e\u4fdd\u5b88\u6027\u3068\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>\u4f7f\u7528\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044\u72b6\u614b\u30d5\u30c3\u30af\u30c1\u30e3\u30c3\u30c8GPT<\/p>\n\n\n\n<p>useState \u306f\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u72b6\u614b\u3092\u5ba3\u8a00\u304a\u3088\u3073\u7ba1\u7406\u3059\u308b\u305f\u3081\u306b React Hooks \u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u6700\u3082\u57fa\u672c\u7684\u3067\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d5\u30c3\u30af\u95a2\u6570\u306e 1 \u3064\u3067\u3059\u3002 useState \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u72b6\u614b\u3092\u8ffd\u52a0\u304a\u3088\u3073\u66f4\u65b0\u3067\u304d\u308b\u305f\u3081\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u30af\u30e9\u30b9 \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f7f\u7528\u305b\u305a\u306b\u72b6\u614b\u7ba1\u7406\u6a5f\u80fd\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u306e\u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const [state, setState] = useState(initialState);\n<\/code><\/pre>\n\n\n\n<p>useState \u306f\u3001\u521d\u671f\u72b6\u614b\u3092\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3068\u3057\u3066\u53d7\u3051\u53d6\u308a\u3001\u73fe\u5728\u306e\u72b6\u614b\u5024\u3068\u72b6\u614b\u5024\u3092\u66f4\u65b0\u3059\u308b\u95a2\u6570\u306e\u914d\u5217\u3092\u8fd4\u3057\u307e\u3059\u3002 \u3053\u306e\u914d\u5217\u306b\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u4f7f\u7528\u3059\u308b\u540d\u524d\u3092\u4ed8\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u72b6\u614b\u5909\u6570\u306e\u5ba3\u8a00: useState \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u72b6\u614b\u5909\u6570\u3092\u5ba3\u8a00\u3057\u3001\u521d\u671f\u5024\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002 \u521d\u671f\u5024\u306f\u3001\u57fa\u672c\u578b (\u6587\u5b57\u5217\u3001\u6570\u5024\u3001\u30d6\u30fc\u30eb\u5024\u306a\u3069) \u307e\u305f\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u914d\u5217\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const [count, setCount] = useState(0);\nconst [name, setName] = useState(\"John\");\nconst [user, setUser] = useState({ name: \"John\", age: 25 });\nconst [list, setList] = useState([\"apple\", \"banana\", \"orange\"]);\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u72b6\u614b\u306e\u53d6\u5f97\u3068\u66f4\u65b0: useState \u306f\u3001\u72b6\u614b\u306e\u5024\u3068\u72b6\u614b\u3092\u66f4\u65b0\u3059\u308b\u95a2\u6570 (setState) \u3092\u8fd4\u3057\u307e\u3059\u3002 \u30c7\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u30ea\u30f3\u30b0\u5272\u308a\u5f53\u3066\u3092\u4f7f\u7528\u3057\u3066\u305d\u308c\u3089\u3092\u53d6\u5f97\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u72b6\u614b\u3092\u66f4\u65b0\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const [count, setCount] = useState(0);\n\n\/\/ \u83b7\u53d6\u72b6\u6001\nconsole.log(count); \/\/ \u8f93\u51fa\uff1a0\n\n\/\/ \u66f4\u65b0\u72b6\u6001\nsetCount(count + 1);\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u6a5f\u80fd\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0: setState \u95a2\u6570\u306f\u3001\u72b6\u614b\u3092\u66f4\u65b0\u3059\u308b\u3068\u304d\u306b\u4ee5\u524d\u306e\u72b6\u614b\u306b\u57fa\u3065\u3044\u3066\u52d5\u4f5c\u3059\u308b\u6a5f\u80fd\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u4f7f\u7528\u3082\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002 \u95a2\u6570\u3092\u5f15\u6570\u3068\u3057\u3066\u53d7\u3051\u53d6\u308b\u3053\u3068\u3067\u3001\u95a2\u6570\u306f\u4ee5\u524d\u306e\u72b6\u614b\u3092\u53d7\u3051\u53d6\u308a\u3001\u65b0\u3057\u3044\u72b6\u614b\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const [count, setCount] = useState(0);\n\n\/\/ \u4f7f\u7528\u51fd\u6570\u5f0f\u66f4\u65b0\nsetCount(prevCount =&gt; prevCount + 1);\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>\u8907\u6570\u306e\u72b6\u614b\u5909\u6570: \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u306f\u3001\u8907\u6570\u306e useState \u3092\u4f7f\u7528\u3057\u3066\u3001\u8907\u6570\u306e\u72b6\u614b\u5909\u6570\u3092\u5ba3\u8a00\u304a\u3088\u3073\u7ba1\u7406\u3067\u304d\u307e\u3059\u3002 \u5404 useState \u547c\u3073\u51fa\u3057\u306f\u72ec\u7acb\u3057\u3066\u304a\u308a\u3001\u305d\u308c\u3089\u306e\u9593\u306b\u76f8\u95a2\u95a2\u4fc2\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const [count, setCount] = useState(0);\nconst [name, setName] = useState(\"John\");\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"5\">\n<li>\u9045\u5ef6\u521d\u671f\u5316: useState \u306e\u521d\u671f\u72b6\u614b\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u521d\u671f\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u4e2d\u306b\u8a08\u7b97\u3055\u308c\u308b\u305f\u3081\u3001\u9045\u5ef6\u521d\u671f\u5316\u3092\u4f7f\u7528\u3057\u3066\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002 \u9045\u5ef6\u521d\u671f\u5316\u3068\u306f\u3001\u521d\u671f\u72b6\u614b\u304c\u6700\u521d\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u6642\u306b\u547c\u3073\u51fa\u3055\u308c\u3001\u521d\u671f\u5024\u3092\u8fd4\u3059\u95a2\u6570\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const [count, setCount] = useState(() =&gt; {\n  const initialCount = calculateInitialCount();\n  return initialCount;\n});\n<\/code><\/pre>\n\n\n\n<p>\u8981\u7d04\u3059\u308b\u3068\u3001useState \u306f\u3001React \u30d5\u30c3\u30af\u3067\u6700\u3082\u57fa\u672c\u7684\u3067\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d5\u30c3\u30af\u95a2\u6570\u306e 1 \u3064\u3067\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u72b6\u614b\u306e\u5ba3\u8a00\u3068\u7ba1\u7406\u304c\u7c21\u5358\u304b\u3064\u76f4\u611f\u7684\u306b\u306a\u308a\u307e\u3059\u3002 useState \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u72b6\u614b\u3092\u8ffd\u52a0\u304a\u3088\u3073\u66f4\u65b0\u3057\u3066\u3001\u30af\u30e9\u30b9 \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f7f\u7528\u305b\u305a\u306b\u72b6\u614b\u7ba1\u7406\u6a5f\u80fd\u3092\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u63d0\u4f9b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>useEffect HookChatGPT\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>useEffect \u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u526f\u4f5c\u7528\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306b React Hooks \u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u5225\u306e\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002 \u526f\u4f5c\u7528\u306b\u306f\u3001\u30c7\u30fc\u30bf\u306e\u30b5\u30d6\u30b9\u30af\u30e9\u30a4\u30d6\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8981\u6c42\u3001\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30cb\u30f3\u30b0\u3001\u30bf\u30a4\u30de\u30fc\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002 useEffect \u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u5f8c\u306b\u526f\u4f5c\u7528\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u884c\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528\u52b9\u679c\u306e\u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>useEffect(effectFunction, dependencies);\n<\/code><\/pre>\n\n\n\n<p>\u3053\u3053\u3067\u3001effectFunction \u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u305f\u5f8c\u306b\u5b9f\u884c\u3055\u308c\u308b\u526f\u4f5c\u7528\u95a2\u6570\u3067\u3059\u3002 \u4f9d\u5b58\u95a2\u4fc2\u306f\u3001\u30a8\u30d5\u30a7\u30af\u30c8\u95a2\u6570\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u6307\u5b9a\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u4f9d\u5b58\u95a2\u4fc2\u914d\u5217\u3067\u3059\u3002 \u4f9d\u5b58\u95a2\u4fc2\u304c\u5909\u66f4\u3055\u308c\u308b\u3068\u3001\u30a8\u30d5\u30a7\u30af\u30c8\u95a2\u6570\u304c\u518d\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u526f\u4f5c\u7528\u30ed\u30b8\u30c3\u30af\u306e\u5b9f\u884c: useEffect \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3055\u307e\u3056\u307e\u306a\u526f\u4f5c\u7528\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002 \u526f\u4f5c\u7528\u95a2\u6570\u306f\u540c\u671f\u307e\u305f\u306f\u975e\u540c\u671f\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u30c7\u30fc\u30bf\u53d6\u5f97\u3001\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u3001\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u306a\u3069\u306e\u3055\u307e\u3056\u307e\u306a\u64cd\u4f5c\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>useEffect(() =&gt; {\n  \/\/ \u6267\u884c\u526f\u4f5c\u7528\u903b\u8f91\n  \/\/ ...\n}, []);\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u526f\u4f5c\u7528\u306e\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7: \u526f\u4f5c\u7528\u95a2\u6570\u306f\u3001\u526f\u4f5c\u7528\u3092\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u3059\u308b\u30af\u30ea\u30fc\u30cb\u30f3\u30b0\u95a2\u6570\u3092\u8fd4\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u95a2\u6570\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u7834\u68c4\u3055\u308c\u308b\u524d\u3001\u307e\u305f\u306f\u526f\u4f5c\u7528\u95a2\u6570\u304c\u518d\u5b9f\u884c\u3055\u308c\u308b\u524d\u306b\u547c\u3073\u51fa\u3055\u308c\u307e\u3059\u3002 \u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u3001\u30b5\u30d6\u30b9\u30af\u30e9\u30a4\u30d6\u89e3\u9664\u3001\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u306e\u524a\u9664\u3001\u30bf\u30a4\u30de\u30fc\u306e\u30af\u30ea\u30a2\u306a\u3069\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>useEffect(() =&gt; {\n  \/\/ \u6267\u884c\u526f\u4f5c\u7528\u903b\u8f91\n  \/\/ ...\n\n  \/\/ \u8fd4\u56de\u6e05\u7406\u51fd\u6570\n  return () =&gt; {\n    \/\/ \u6267\u884c\u6e05\u7406\u64cd\u4f5c\n    \/\/ ...\n  };\n}, []);\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u526f\u4f5c\u7528\u3092\u5236\u5fa1\u3059\u308b\u305f\u3081\u306e\u6761\u4ef6\u4ed8\u304d\u5b9f\u884c: \u4f9d\u5b58\u95a2\u4fc2\u914d\u5217\u3067\u4f9d\u5b58\u95a2\u4fc2\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u526f\u4f5c\u7528\u95a2\u6570\u306e\u6761\u4ef6\u4ed8\u304d\u5b9f\u884c\u3092\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002 \u526f\u4f5c\u7528\u95a2\u6570\u306f\u3001\u4f9d\u5b58\u95a2\u4fc2\u304c\u5909\u66f4\u3055\u308c\u305f\u5834\u5408\u306b\u306e\u307f\u518d\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const [count, setCount] = useState(0);\n\nuseEffect(() =&gt; {\n  \/\/ \u4ec5\u5728count\u53d1\u751f\u53d8\u5316\u65f6\u6267\u884c\u526f\u4f5c\u7528\n  console.log(\"Count changed: \", count);\n}, [count]);\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>\u526f\u4f5c\u7528\u95a2\u6570\u306e\u30bf\u30a4\u30df\u30f3\u30b0: useEffect \u306e\u526f\u4f5c\u7528\u95a2\u6570\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u521d\u671f\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u5f8c\u3001\u304a\u3088\u3073\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306e\u305f\u3073\u306b\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002 \u4f9d\u5b58\u95a2\u4fc2\u306e\u914d\u5217\u3092\u6307\u5b9a\u3057\u306a\u3044\u5834\u5408\u3001\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3054\u3068\u306b\u526f\u4f5c\u7528\u95a2\u6570\u306e\u5b9f\u884c\u304c\u30c8\u30ea\u30ac\u30fc\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>useEffect(() =&gt; {\n  \/\/ \u5728\u6bcf\u6b21\u6e32\u67d3\u540e\u90fd\u6267\u884c\u526f\u4f5c\u7528\n  console.log(\"Component rendered\");\n});\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"5\">\n<li>\u9045\u5ef6\u5b9f\u884c\u3068\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7: \u526f\u4f5c\u7528\u95a2\u6570\u306f\u3001\u9045\u5ef6\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u95a2\u6570\u3092\u8fd4\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u3053\u308c\u306f\u3001\u6b21\u306e\u526f\u4f5c\u7528\u3092\u5b9f\u884c\u3059\u308b\u524d\u306b\u3044\u304f\u3064\u304b\u306e\u526f\u4f5c\u7528\u3092\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u72b6\u6cc1\u3067\u5f79\u7acb\u3061\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>useEffect(() =&gt; {\n  \/\/ \u6267\u884c\u526f\u4f5c\u7528\u903b\u8f91\n  \/\/ ...\n\n  \/\/ \u8fd4\u56de\u5ef6\u8fdf\u6e05\u7406\u7684\u51fd\u6570\n  return () =&gt; {\n    \/\/ \u5ef6\u8fdf\u6e05\u7406\u64cd\u4f5c\n    \/\/ ...\n  };\n}, []);\n<\/code><\/pre>\n\n\n\n<p>\u8981\u7d04\u3059\u308b\u3068\u3001useEffect\u306f\u3001\u526f\u4f5c\u7528\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u53cd\u5fdc\u30d5\u30c3\u30af\u306e\u91cd\u8981\u306a\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002 \u3053\u308c\u306f\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3055\u307e\u3056\u307e\u306a\u526f\u4f5c\u7528\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u884c\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u3001\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 useEffect\u3092\u8ce2\u304f\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u526f\u4f5c\u7528\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u3068\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u3092\u78ba\u4fdd\u3057\u3001\u4e0d\u8981\u306a\u526f\u4f5c\u7528\u3084\u30ea\u30bd\u30fc\u30b9\u30ea\u30fc\u30af\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>useContext HookChatGPT\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>useContext \u306f\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306b React Hooks \u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002 \u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ec\u30d9\u30eb\u9593\u3067\u30c7\u30fc\u30bf\u3092\u5171\u6709\u3057\u3066\u3001\u30ec\u30a4\u30e4\u30fc\u3054\u3068\u306b\u5c0f\u9053\u5177\u3092\u6e21\u3059\u3053\u3068\u306a\u304f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30c4\u30ea\u30fc\u306b\u30c7\u30fc\u30bf\u3092\u6e21\u3059\u305f\u3081\u306eReact\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const value = useContext(Context);\n<\/code><\/pre>\n\n\n\n<p>\u3053\u3053\u3067\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306fReact.createContext\u3092\u4ecb\u3057\u3066\u4f5c\u6210\u3055\u308c\u305f\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3059\u3002 value \u306f\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u5024\u3067\u3042\u308a\u3001\u4e0a\u4f4d\u30ec\u30d9\u30eb\u306e\u6700\u3082\u8fd1\u3044\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u304b\u3089\u53d6\u5f97\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3092\u4f5c\u6210\u3059\u308b: \u307e\u305a\u3001React.createContext \u3092\u4f7f\u7528\u3057\u3066\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8 \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30c4\u30ea\u30fc\u3067\u30c7\u30fc\u30bf\u3092\u6e21\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u30c7\u30fc\u30bf\u306e\u30b3\u30f3\u30c6\u30ca\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const MyContext = React.createContext();\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u5024\u3092\u6307\u5b9a\u3059\u308b: \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u968e\u5c64\u306e\u3069\u3053\u304b\u3067\u3001Context.Provider \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u5024\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u30d7\u30ed\u30d0\u30a4\u30c0\u30fc \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001\u5171\u6709\u3059\u308b\u30c7\u30fc\u30bf\u3092\u542b\u3080\u5024\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>&lt;MyContext.Provider value={data}&gt;\n  {\/* \u5d4c\u5957\u7684\u5b50\u7ec4\u4ef6 *\/}\n&lt;\/MyContext.Provider&gt;\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>useContext \u3092\u4f7f\u7528\u3057\u3066\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u5024\u3092\u53d6\u5f97\u3059\u308b: \u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u5024\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u306f\u3001useContext \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u5024\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002 useContext \u306f\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8 \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3068\u3057\u3066\u53d7\u3051\u53d6\u308a\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u73fe\u5728\u306e\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const value = useContext(MyContext);\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u65e2\u5b9a\u5024: \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8 \u30c4\u30ea\u30fc\u306b\u4e00\u81f4\u3059\u308b\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u304c\u306a\u3044\u5834\u5408\u3001\u307e\u305f\u306f\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u304c\u5024\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u63d0\u4f9b\u3057\u306a\u3044\u5834\u5408\u306f\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u65e2\u5b9a\u5024\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u65e2\u5b9a\u5024\u306f\u3001createContext \u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u4f7f\u7528\u3057\u3066\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3068\u304d\u306b\u6307\u5b9a\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const MyContext = React.createContext(defaultValue);\n<\/code><\/pre>\n\n\n\n<p>\u8981\u7d04\u3059\u308b\u3068\u3001useContext \u306f\u3001React \u30d5\u30c3\u30af\u304c\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u5024\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306e\u4fbf\u5229\u306a\u65b9\u6cd5\u3067\u3059\u3002 useContext \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30ec\u30a4\u30e4\u30fc\u3054\u3068\u306b\u5c0f\u9053\u5177\u3092\u6e21\u3059\u3053\u3068\u3067\u30c7\u30fc\u30bf\u306e\u5171\u6709\u3092\u56de\u907f\u3057\u3001\u4ee3\u308f\u308a\u306b\u4e0a\u4f4d\u30ec\u30d9\u30eb\u306e\u6700\u3082\u8fd1\u3044\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u304b\u3089\u76f4\u63a5\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u5024\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u306e\u30c7\u30fc\u30bf\u5171\u6709\u304c\u3088\u308a\u7c21\u5358\u304b\u3064\u76f4\u611f\u7684\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>useRef HookChatGPT\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>useRef \u306f\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u53ef\u5909\u53c2\u7167\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b React Hooks \u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002 \u3053\u308c\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u6709\u52b9\u671f\u9593\u3092\u901a\u3058\u3066\u5909\u66f4\u3055\u308c\u306a\u3044\u5909\u66f4\u53ef\u80fd\u306a ref \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528\u53c2\u7167\u306e\u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const refContainer = useRef(initialValue);\n<\/code><\/pre>\n\n\n\n<p>\u3053\u3053\u3067\u3001initialValue \u306f\u3001ref \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u73fe\u5728\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u521d\u671f\u5316\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u521d\u671f\u5024\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u53c2\u7167\u306e\u4f5c\u6210\u3068\u30a2\u30af\u30bb\u30b9: useRef \u3092\u4f7f\u7528\u3057\u3066\u53c2\u7167\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001\u5909\u6570\u306b\u5272\u308a\u5f53\u3066\u307e\u3059\u3002 ref \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u306f\u3001\u53c2\u7167\u5024\u306e\u683c\u7d0d\u3068\u30a2\u30af\u30bb\u30b9\u306b\u4f7f\u7528\u3067\u304d\u308b current \u3068\u3044\u3046\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const refContainer = useRef();\nconsole.log(refContainer.current); \/\/ \u8bbf\u95eeref\u503c\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u306e\u53c2\u7167\u306e\u5b89\u5b9a\u6027\u3092\u7dad\u6301\u3059\u308b: ref \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u6709\u52b9\u671f\u9593\u4e2d\u306f\u5909\u66f4\u3055\u308c\u305a\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3082 ref \u306e\u73fe\u5728\u306e\u5024\u306f\u4e00\u5b9a\u3067\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306e\u5f71\u97ff\u3092\u53d7\u3051\u305a\u306b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u53c2\u7167\u3092\u5171\u6709\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function MyComponent() {\n  const refContainer = useRef();\n\n  useEffect(() =&gt; {\n    refContainer.current = someValue;\n  }, []);\n\n  \/\/ \u5728\u7ec4\u4ef6\u91cd\u65b0\u6e32\u67d3\u540e\uff0crefContainer.current\u4ecd\u7136\u4fdd\u6301\u5f15\u7528\u7684\u7a33\u5b9a\u6027\n  \/\/ ...\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u526f\u4f5c\u7528\u3067\u53c2\u7167\u3092\u4f7f\u7528\u3059\u308b: ref \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u6709\u52b9\u671f\u9593\u3092\u901a\u3058\u3066\u5909\u66f4\u3055\u308c\u306a\u3044\u305f\u3081\u3001\u526f\u4f5c\u7528\u3067\u53c2\u7167\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 \u3053\u308c\u306f\u3001DOM\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u308a\u3001\u30bf\u30a4\u30de\u30fcID\u3092\u4fdd\u5b58\u3057\u305f\u308a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306b\u4fbf\u5229\u3067\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function MyComponent() {\n  const intervalRef = useRef();\n\n  useEffect(() =&gt; {\n    intervalRef.current = setInterval(() =&gt; {\n      \/\/ \u505a\u4e00\u4e9b\u64cd\u4f5c\n    }, 1000);\n\n    return () =&gt; {\n      clearInterval(intervalRef.current);\n    };\n  }, []);\n\n  \/\/ ...\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>\u69cb\u6210\u90e8\u54c1\u306e\u5f37\u5236\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0: ref \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5909\u66f4\u3057\u3066\u3082\u3001\u69cb\u6210\u90e8\u54c1\u306e\u518d\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306f\u30c8\u30ea\u30ac\u30fc\u3055\u308c\u307e\u305b\u3093\u3002 \u305f\u3060\u3057\u3001ref \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u73fe\u5728\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u5f37\u5236\u7684\u306b\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function MyComponent() {\n  const refContainer = useRef();\n\n  const forceUpdate = () =&gt; {\n    refContainer.current = Math.random();\n  };\n\n  \/\/ ...\n}\n<\/code><\/pre>\n\n\n\n<p>\u8981\u7d04\u3059\u308b\u3068\u3001useRef\u306f\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u5909\u66f4\u53ef\u80fd\u306a\u53c2\u7167\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306bReact Hooks\u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002 useRef \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u5168\u4f53\u3092\u901a\u3058\u3066\u53c2\u7167\u306e\u5b89\u5b9a\u6027\u3092\u7dad\u6301\u3057\u3001\u526f\u4f5c\u7528\u3067\u53c2\u7167\u5024\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3066\u64cd\u4f5c\u3067\u304d\u307e\u3059\u3002 DOM\u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3001\u30bf\u30a4\u30de\u30fcID\u306e\u4fdd\u5b58\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306e\u5f37\u5236\u306a\u3069\u306b\u975e\u5e38\u306b\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u30c1\u30e3\u30c3\u30c8GPT\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u306f\u3001React\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u518d\u5229\u7528\u53ef\u80fd\u306a\u30ed\u30b8\u30c3\u30af\u3092\u69cb\u7bc9\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u3092\u30ab\u30b9\u30bf\u30e0\u95a2\u6570\u306b\u30ab\u30d7\u30bb\u30eb\u5316\u3057\u3001\u305d\u306e\u30ed\u30b8\u30c3\u30af\u3092\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u5171\u6709\u304a\u3088\u3073\u518d\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u306f\u3001\u30d5\u30c3\u30af\u3068\u3057\u3066\u660e\u78ba\u306b\u8b58\u5225\u3059\u308b\u305f\u3081\u306b\u300cuse\u300d\u3067\u59cb\u307e\u308a\u307e\u3059\u3002 \u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u306f\u3001\u57fa\u672c\u7684\u306b\u3001\u4ed6\u306eReact\u30d5\u30c3\u30af\u307e\u305f\u306f\u4ed6\u306e\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3067\u304d\u308b\u95a2\u6570\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u4e3b\u306a\u624b\u9806\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30ed\u30b8\u30c3\u30af\u3092\u30ab\u30b9\u30bf\u30e0 \u30d5\u30c3\u30af\u95a2\u6570\u3068\u3057\u3066\u62bd\u51fa\u3059\u308b: \u518d\u5229\u7528\u3059\u308b\u30ed\u30b8\u30c3\u30af\u306b\u57fa\u3065\u3044\u3066\u3001\u72ec\u7acb\u3057\u305f\u95a2\u6570\u3068\u3057\u3066\u30ed\u30b8\u30c3\u30af\u3092\u62bd\u51fa\u3057\u307e\u3059\u3002 \u3053\u306e\u95a2\u6570\u306f\u3001useState\u3001useEffect\u306a\u3069\u306e\u53cd\u5fdc\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u3001\u5fc5\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3068\u623b\u308a\u5024\u3092\u5b9a\u7fa9\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function useCustomLogic(initialValue) {\n  const [value, setValue] = useState(initialValue);\n\n  useEffect(() =&gt; {\n    \/\/ \u526f\u4f5c\u7528\u903b\u8f91\n    \/\/ ...\n\n    return () =&gt; {\n      \/\/ \u6e05\u7406\u903b\u8f91\n      \/\/ ...\n    };\n  }, [value]);\n\n  const updateValue = (newValue) =&gt; {\n    setValue(newValue);\n  };\n\n  \/\/ \u8fd4\u56de\u6240\u9700\u7684\u6570\u636e\u548c\u51fd\u6570\n  return { value, updateValue };\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b: \u4ed6\u306e React \u30d5\u30c3\u30af\u3068\u540c\u69d8\u306b\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u95a2\u6570\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002 \u30ab\u30b9\u30bf\u30e0 Hook \u95a2\u6570\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u3001\u8fd4\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3068\u95a2\u6570\u3092\u53d6\u5f97\u3057\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function MyComponent() {\n  const { value, updateValue } = useCustomLogic(0);\n\n  \/\/ \u4f7f\u7528\u8fd4\u56de\u7684\u6570\u636e\u548c\u51fd\u6570\n  \/\/ ...\n\n  return (\n    \/\/ \u7ec4\u4ef6\u7684JSX\n  );\n}\n<\/code><\/pre>\n\n\n\n<p>\u30d5\u30c3\u30af\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u3053\u3068\u3067\u3001\u30ed\u30b8\u30c3\u30af\u3092\u518d\u5229\u7528\u53ef\u80fd\u306a\u95a2\u6570\u306b\u30ab\u30d7\u30bb\u30eb\u5316\u3057\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30b3\u30fc\u30c9\u3092\u3088\u308a\u30af\u30ea\u30fc\u30f3\u3067\u8aad\u307f\u3084\u3059\u304f\u3001\u4fdd\u5b88\u3057\u3084\u3059\u304f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u306e\u5229\u70b9\u306f\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u30ed\u30b8\u30c3\u30af\u3092\u62bd\u51fa\u3057\u3066\u518d\u5229\u7528\u3067\u304d\u308b\u305f\u3081\u3001\u30b3\u30fc\u30c9\u306e\u91cd\u8907\u3084\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u306e\u65ad\u7247\u5316\u3092\u56de\u907f\u3067\u304d\u308b\u3053\u3068\u3067\u3059\u3002 \u3055\u3089\u306b\u3001\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u3092\u4ed6\u306e\u30d5\u30c3\u30af\u3084\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u67d4\u8edf\u6027\u3068\u6a5f\u80fd\u6027\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u81ea\u4f53\u306f\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u305f\u51fa\u529b\u3092\u5b9a\u7fa9\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u518d\u5229\u7528\u53ef\u80fd\u306a\u30ed\u30b8\u30c3\u30af\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u306b\u6ce8\u610f\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002 \u3057\u305f\u304c\u3063\u3066\u3001\u72b6\u614b\u3068\u526f\u4f5c\u7528\u306e\u51e6\u7406\u306b\u7126\u70b9\u3092\u5f53\u3066\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u51fa\u529b\u306b\u95a2\u9023\u3059\u308b\u64cd\u4f5c\u306f\u542b\u3081\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>useCallback\u3068useMemo HooksChatGPT\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>useCallback \u3068 useMemo \u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306b React Hooks \u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3042\u308a\u3001\u3069\u3061\u3089\u3082\u4e0d\u8981\u306a\u8a08\u7b97\u3084\u95a2\u6570\u306e\u518d\u4f5c\u6210\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u306b\u5024\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>useCallback \u30d5\u30c3\u30af: useCallback \u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u95a2\u6570\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3068\u4f9d\u5b58\u95a2\u4fc2\u306e\u914d\u5217\u3092\u53d7\u3051\u53d6\u308a\u3001\u30e1\u30e2\u30ea\u99c6\u52d5\u578b\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u8fd4\u3057\u307e\u3059\u3002 \u30e1\u30e2\u30ea\u5316\u3055\u308c\u305f\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u306f\u3001\u4f9d\u5b58\u95a2\u4fc2\u304c\u5909\u66f4\u3055\u308c\u305f\u3068\u304d\u306b\u306e\u307f\u518d\u4f5c\u6210\u3055\u308c\u3001\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f\u95a2\u6570\u53c2\u7167\u304c\u8fd4\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const memoizedCallback = useCallback(callback, dependencies);\n<\/code><\/pre>\n\n\n\n<p>\u3053\u3053\u3067\u3001callback \u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u308b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3067\u3042\u308a\u3001\u4f9d\u5b58\u95a2\u4fc2\u306f\u4f9d\u5b58\u95a2\u4fc2\u306e\u914d\u5217\u3067\u3059\u3002<\/p>\n\n\n\n<p>use\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u306f\u3001\u6b21\u306e\u72b6\u6cc1\u3067\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u5c0f\u9053\u5177\u3068\u3057\u3066\u30b5\u30d6\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u6e21\u3059\u5834\u5408\u3001useCallback \u3092\u4f7f\u7528\u3057\u3066\u3001\u30b5\u30d6\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u4e0d\u8981\u306a\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>useEffect \u307e\u305f\u306f useMemo \u306e\u4f9d\u5b58\u95a2\u4fc2\u914d\u5217\u3067\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u3001useCallback \u3092\u4f7f\u7528\u3057\u3066\u3001\u4f9d\u5b58\u95a2\u4fc2\u304c\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u308b\u305f\u3073\u306b\u5909\u66f4\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>useMemo\u30d5\u30c3\u30af:useMemo\u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u8a08\u7b97\u7d50\u679c\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u8a08\u7b97\u95a2\u6570\u3068\u4f9d\u5b58\u95a2\u4fc2\u306e\u914d\u5217\u3092\u53d7\u3051\u53d6\u308a\u3001\u8a08\u7b97\u7d50\u679c\u306e\u30e1\u30e2\u30ea\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002 \u30e1\u30e2\u30ea\u5024\u306f\u3001\u4f9d\u5b58\u95a2\u4fc2\u304c\u5909\u66f4\u3055\u308c\u305f\u3068\u304d\u306b\u306e\u307f\u518d\u8a08\u7b97\u3055\u308c\u3001\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f\u5024\u304c\u8fd4\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const memoizedValue = useMemo(() =&gt; computeExpensiveValue(a, b), dependencies);\n<\/code><\/pre>\n\n\n\n<p>\u3053\u3053\u3067\u3001computeExpensiveValue \u306f\u8a08\u7b97\u95a2\u6570\u3001a \u3068 b \u306f\u8a08\u7b97\u95a2\u6570\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3001\u4f9d\u5b58\u95a2\u4fc2\u306f\u4f9d\u5b58\u95a2\u4fc2\u306e\u914d\u5217\u3067\u3059\u3002<\/p>\n\n\n\n<p>useMemo \u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u72b6\u6cc1\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>useMemo \u306f\u3001\u4f9d\u5b58\u95a2\u4fc2\u306b\u57fa\u3065\u3044\u3066\u5024\u3092\u8a08\u7b97\u3057\u3001\u305d\u306e\u5024\u3092\u8907\u6570\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u9593\u3067\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30b3\u30b9\u30c8\u306e\u304b\u304b\u308b\u8a08\u7b97\u30d7\u30ed\u30bb\u30b9 (\u591a\u6570\u306e\u53cd\u5fa9\u3084\u8907\u96d1\u306a\u8a08\u7b97\u306a\u3069) \u304c\u3042\u308a\u3001\u4f9d\u5b58\u95a2\u4fc2\u304c\u5909\u66f4\u3055\u308c\u3066\u3044\u306a\u304f\u3066\u3082\u8a08\u7b97\u7d50\u679c\u304c\u6709\u52b9\u306a\u5834\u5408\u306f\u3001useMemo \u3092\u4f7f\u7528\u3057\u3066\u4e0d\u8981\u306a\u8a08\u7b97\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>useCallback \u3068 useMemo \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u52b9\u679c\u7684\u306b\u6700\u9069\u5316\u3057\u3001\u4e0d\u8981\u306a\u95a2\u6570\u306e\u518d\u4f5c\u6210\u3068\u8a08\u7b97\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002 \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3068\u8a08\u7b97\u7d50\u679c\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u95a2\u9023\u3059\u308b\u30ed\u30b8\u30c3\u30af\u3092\u518d\u5b9f\u884c\u3057\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u5fdc\u7b54\u6027\u3068\u52b9\u7387\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>\u4ed6\u306e\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d5\u30c3\u30af\u306e\u4f7f\u7528\u6cd5\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044ReducerChatGPT<\/p>\n\n\n\n<p>useReduce\u306f\u3001\u8907\u96d1\u306a\u72b6\u614b\u30ed\u30b8\u30c3\u30af\u3067\u72b6\u614b\u7ba1\u7406\u3092\u7ba1\u7406\u3059\u308b\u305f\u3081\u306bReact Hooks\u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u72b6\u614b\u7ba1\u7406\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002 \u3053\u308c\u306f\u3001Redux\u306e\u30ec\u30c7\u30e5\u30fc\u30b5\u30fc\u3068\u540c\u69d8\u306b\u3001Reduce\u6a5f\u80fd\u3092\u4f7f\u7528\u3057\u3066\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u72b6\u614b\u3092\u7ba1\u7406\u3057\u307e\u3059\u3002 useReduce \u306f\u3001\u30b9\u30c6\u30fc\u30bf\u30b9\u5024\u3068\u3001\u30b9\u30c6\u30fc\u30bf\u30b9\u306e\u66f4\u65b0\u3092\u30c8\u30ea\u30ac\u30fc\u3059\u308b\u30c7\u30a3\u30b9\u30d1\u30c3\u30c1\u95a2\u6570\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528\u306e\u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const [state, dispatch] = useReducer(reducer, initialState);\n<\/code><\/pre>\n\n\n\n<p>\u3053\u3053\u3067\u3001reducer \u306f\u3001\u73fe\u5728\u306e\u72b6\u614b\u3068\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u53d7\u3051\u53d6\u308a\u3001\u65b0\u3057\u3044\u72b6\u614b\u3092\u8fd4\u3059\u95a2\u6570\u3067\u3059\u3002 \u521d\u671f\u72b6\u614b\u306f\u3001\u72b6\u614b\u306e\u521d\u671f\u5024\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Reducer \u95a2\u6570\u3092\u4f5c\u6210\u3059\u308b: \u307e\u305a\u3001\u7279\u5b9a\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u57fa\u3065\u3044\u3066\u72b6\u614b\u3092\u66f4\u65b0\u3059\u308b Reduce \u95a2\u6570\u3092\u5b9a\u7fa9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 Reduce \u95a2\u6570\u306f\u3001\u73fe\u5728\u306e\u72b6\u614b\u3068\u30a2\u30af\u30b7\u30e7\u30f3\u306e 2 \u3064\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u53d7\u3051\u53d6\u308a\u3001\u30a2\u30af\u30b7\u30e7\u30f3\u306e\u7a2e\u985e\u306b\u5fdc\u3058\u3066\u72b6\u614b\u3092\u66f4\u65b0\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function reducer(state, action) {\n  switch (action.type) {\n    case \"INCREMENT\":\n      return { count: state.count + 1 };\n    case \"DECREMENT\":\n      return { count: state.count - 1 };\n    default:\n      return state;\n  }\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>useReduce \u3092\u4f7f\u7528\u3057\u3066\u72b6\u614b\u3092\u7ba1\u7406\u3059\u308b: useReduce \u3092\u4f7f\u7528\u3057\u3066\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u72b6\u614b\u3092\u7ba1\u7406\u3057\u307e\u3059\u3002 useReduce \u306f\u3001\u30ec\u30b8\u30e5\u30fc\u30b5\u95a2\u6570\u3068\u521d\u671f\u72b6\u614b\u3092\u53d7\u3051\u53d6\u308a\u3001\u73fe\u5728\u306e\u72b6\u614b\u3068\u30c7\u30a3\u30b9\u30d1\u30c3\u30c1\u95a2\u6570\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const [state, dispatch] = useReducer(reducer, initialState);\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u72b6\u614b\u306e\u66f4\u65b0: \u30c7\u30a3\u30b9\u30d1\u30c3\u30c1\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u3001\u30a2\u30af\u30b7\u30e7\u30f3 \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6e21\u3059\u3053\u3068\u3067\u3001\u72b6\u614b\u306e\u66f4\u65b0\u3092\u30c8\u30ea\u30ac\u30fc\u3057\u307e\u3059\u3002 \u901a\u5e38\u3001\u30a2\u30af\u30b7\u30e7\u30f3 \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u306f\u3001\u5b9f\u884c\u3059\u308b\u64cd\u4f5c\u306e\u7a2e\u985e\u3092\u6307\u5b9a\u3059\u308b type \u5c5e\u6027\u3068\u3001\u305d\u306e\u4ed6\u306e\u95a2\u9023\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>dispatch({ type: \"INCREMENT\" });\ndispatch({ type: \"DECREMENT\" });\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>\u72b6\u614b\u3092\u4f7f\u7528: \u72b6\u614b\u3092\u4ecb\u3057\u3066\u73fe\u5728\u306e\u72b6\u614b\u5024\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u4f7f\u7528\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>return (\n  &lt;div&gt;\n    Count: {state.count}\n    &lt;button onClick={() =&gt; dispatch({ type: \"INCREMENT\" })}&gt;Increment&lt;\/button&gt;\n    &lt;button onClick={() =&gt; dispatch({ type: \"DECREMENT\" })}&gt;Decrement&lt;\/button&gt;\n  &lt;\/div&gt;\n);\n<\/code><\/pre>\n\n\n\n<p>\u8981\u7d04\u3059\u308b\u3068\u3001useReduce\u306f\u3001\u8907\u96d1\u306a\u72b6\u614b\u30ed\u30b8\u30c3\u30af\u3067\u72b6\u614b\u7ba1\u7406\u3092\u7ba1\u7406\u3059\u308b\u305f\u3081\u306bReact Hooks\u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u72b6\u614b\u7ba1\u7406\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002 Reduce \u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u72b6\u614b\u306e\u66f4\u65b0\u30ed\u30b8\u30c3\u30af\u3092\u5b9a\u7fa9\u3057\u3001\u30c7\u30a3\u30b9\u30d1\u30c3\u30c1\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u72b6\u614b\u306e\u66f4\u65b0\u3092\u30c8\u30ea\u30ac\u30fc\u3067\u304d\u307e\u3059\u3002 UseReduce\u306f\u3001\u30a2\u30af\u30b7\u30e7\u30f3\u306e\u7a2e\u985e\u306b\u57fa\u3065\u3044\u3066\u8907\u96d1\u306a\u72b6\u614b\u306e\u66f4\u65b0\u3092\u5fc5\u8981\u3068\u3059\u308b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u7ba1\u7406\u3059\u308b\u306e\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u72b6\u614b\u7ba1\u7406\u304c\u3088\u308a\u69cb\u9020\u5316\u3055\u308c\u3001\u4fdd\u5b88\u3057\u3084\u3059\u304f\u306a\u308a\u3001\u76f4\u63a5\u64cd\u4f5c\u3084\u72b6\u614b\u306e\u66f4\u65b0\u306e\u8907\u96d1\u3055\u304c\u56de\u907f\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>\u4ed6\u306e\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d5\u30c3\u30af\u306e\u4f7f\u7528\u6cd5\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044ParamsChatGPT<\/p>\n\n\n\n<p>useParams \u306f\u3001URL \u304b\u3089\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u62bd\u51fa\u3059\u308b\u305f\u3081\u306b React Router \u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002 \u3053\u308c\u306f\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u73fe\u5728\u306e\u30eb\u30fc\u30c8\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u5024\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528\u3059\u308b\u624b\u9806\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>useParams \u306e\u7d39\u4ecb: \u307e\u305a\u3001React Router \u30e9\u30a4\u30d6\u30e9\u30ea\u304b\u3089 useParams \u3092\u53d6\u308a\u8fbc\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>import { useParams } from 'react-router-dom';\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067 useParams \u3092\u4f7f\u7528\u3059\u308b: \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067 useParams \u3092\u4f7f\u7528\u3057\u3066\u3001\u73fe\u5728\u306e\u30eb\u30fc\u30c8\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u5024\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002 useParams \u306f\u3001URL \u304b\u3089\u62bd\u51fa\u3055\u308c\u305f\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u5024\u3092\u542b\u3080\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function MyComponent() {\n  const params = useParams();\n\n  \/\/ \u8bbf\u95ee\u53c2\u6570\u503c\n  const id = params.id;\n\n  \/\/ ...\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u7279\u5b9a\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u62bd\u51fa\u3059\u308b: URL \u306b\u8907\u6570\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u540d\u306b\u57fa\u3065\u3044\u3066\u7279\u5b9a\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u5024\u3092\u62bd\u51fa\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function MyComponent() {\n  const { id, category } = useParams();\n\n  \/\/ ...\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u69cb\u6210: useParams \u3092\u4f7f\u7528\u3059\u308b\u306b\u306f\u3001React \u30eb\u30fc\u30bf\u30fc\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u69cb\u6210\u3067\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306e\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u3066\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u3066\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30d1\u30b9\u3092\u5b9a\u7fa9\u3067\u304d\u307e\u3059\u3002<code>&lt;Route&gt;<\/code><code>path<\/code><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>&lt;Route path=\"\/users\/:id\" component={UserDetail} \/&gt;\n<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8a18\u306e\u4f8b\u3067\u306f\u3001\u5b9f\u969b\u306e\u30e6\u30fc\u30b6\u30fc ID \u3068\u4e00\u81f4\u3059\u308b\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u3002<code>:id<\/code><\/p>\n\n\n\n<p>\u8981\u7d04\u3059\u308b\u3068\u3001useParams \u306f URL \u304b\u3089\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u62bd\u51fa\u3059\u308b\u305f\u3081\u306b React Router \u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002 \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u306e\u73fe\u5728\u306e\u30eb\u30fc\u30c8\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u5024\u3092\u53d6\u5f97\u3057\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u540d\u306b\u57fa\u3065\u3044\u3066\u7279\u5b9a\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u62bd\u51fa\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002 useParams \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001URL \u306e\u52d5\u7684\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306b\u7c21\u5358\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3066\u64cd\u4f5c\u3057\u3001\u305d\u306e\u5024\u306b\u57fa\u3065\u3044\u3066\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u52d5\u4f5c\u3092\u8abf\u6574\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>\u4ed6\u306e\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d5\u30c3\u30af\u306e\u4f7f\u7528\u5c65\u6b74\u30c1\u30e3\u30c3\u30c8GPT\u3092\u8a73\u7d30\u306b\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>useHistory \u306f\u3001\u30d6\u30e9\u30a6\u30b6\u306e\u5c65\u6b74\u3068\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306b React Router \u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u6a5f\u80fd\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u5c65\u6b74\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3068\u64cd\u4f5c\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528\u5c65\u6b74\u3092\u4f7f\u7528\u3059\u308b\u624b\u9806\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>useHistory \u306e\u7d39\u4ecb: \u307e\u305a\u3001React Router \u30e9\u30a4\u30d6\u30e9\u30ea\u304b\u3089 useHistory \u3092\u53d6\u308a\u8fbc\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>import { useHistory } from 'react-router-dom';\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067 useHistory \u3092\u4f7f\u7528\u3059\u308b: \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067 useHistory \u3092\u4f7f\u7528\u3057\u3066\u5c65\u6b74\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53d6\u5f97\u3057\u3001\u305d\u308c\u3092\u4f7f\u7528\u3057\u3066\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u5c65\u6b74\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3066\u64cd\u4f5c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function MyComponent() {\n  const history = useHistory();\n\n  \/\/ ...\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u65b0\u3057\u3044\u30eb\u30fc\u30c8\u306b\u79fb\u52d5\u3059\u308b: \u5c65\u6b74\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001\u30e6\u30fc\u30b6\u30fc\u3092\u65b0\u3057\u3044\u30eb\u30fc\u30c8\u306b\u79fb\u52d5\u3057\u307e\u3059\u3002<code>push<\/code><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function MyComponent() {\n  const history = useHistory();\n\n  const handleClick = () =&gt; {\n    history.push('\/new-route');\n  };\n\n  return (\n    &lt;button onClick={handleClick}&gt;Go to New Route&lt;\/button&gt;\n  );\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>\u524d\u306e\u30da\u30fc\u30b8\u306b\u623b\u308b: \u5c65\u6b74\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001\u524d\u306e\u30da\u30fc\u30b8\u306b\u623b\u308a\u307e\u3059\u3002<code>goBack<\/code><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function MyComponent() {\n  const history = useHistory();\n\n  const handleGoBack = () =&gt; {\n    history.goBack();\n  };\n\n  return (\n    &lt;button onClick={handleGoBack}&gt;Go Back&lt;\/button&gt;\n  );\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"5\">\n<li>\u73fe\u5728\u306e\u30eb\u30fc\u30c8\u3092\u7f6e\u304d\u63db\u3048\u308b: \u65b0\u3057\u3044\u5c65\u6b74\u3092\u4f5c\u6210\u3059\u308b\u4ee3\u308f\u308a\u306b\u3001\u5c65\u6b74\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u73fe\u5728\u306e\u30eb\u30fc\u30c8\u3092\u7f6e\u304d\u63db\u3048\u307e\u3059\u3002<code>replace<\/code><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function MyComponent() {\n  const history = useHistory();\n\n  const handleReplaceRoute = () =&gt; {\n    history.replace('\/new-route');\n  };\n\n  return (\n    &lt;button onClick={handleReplaceRoute}&gt;Replace Route&lt;\/button&gt;\n  );\n}\n<\/code><\/pre>\n\n\n\n<p>\u8981\u7d04\u3059\u308b\u3068\u3001useHistory\u306f\u3001\u30d6\u30e9\u30a6\u30b6\u306e\u5c65\u6b74\u3068\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306bReact\u30eb\u30fc\u30bf\u30fc\u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002 useHistory \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u306e\u5c65\u6b74\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53d6\u5f97\u3057\u3001\u30eb\u30fc\u30c8 \u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u3068\u5c65\u6b74\u7ba1\u7406\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 \u5c65\u6b74\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u306e\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3001\u524d\u306e\u30da\u30fc\u30b8\u3078\u306e\u5fa9\u5e30\u3001\u73fe\u5728\u306e\u30eb\u30fc\u30c8\u306e\u7f6e\u304d\u63db\u3048\u306a\u3069\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u52d5\u4f5c\u3092\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>\u4ed6\u306e\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d5\u30c3\u30af\u306e\u4f7f\u7528\u6cd5\u3092\u8a73\u7d30\u306b\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>useLocation \u306f\u3001\u73fe\u5728\u306e URL \u60c5\u5831\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306b React Router \u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002 \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u306e\u73fe\u5728\u306e\u30eb\u30fc\u30c8\u306e\u5834\u6240\u60c5\u5831 (\u30d1\u30b9\u540d\u3001\u691c\u7d22\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3001\u30cf\u30c3\u30b7\u30e5\u306a\u3069) \u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528\u5834\u6240\u3092\u4f7f\u7528\u3059\u308b\u624b\u9806\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>useLocation \u306e\u7d39\u4ecb: \u307e\u305a\u3001React Router \u30e9\u30a4\u30d6\u30e9\u30ea\u304b\u3089 useLocation \u3092\u53d6\u308a\u8fbc\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>import { useLocation } from 'react-router-dom';\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067 useLocation \u3092\u4f7f\u7528\u3059\u308b: \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067 useLocation \u3092\u4f7f\u7528\u3057\u3066\u3001\u73fe\u5728\u306e\u30eb\u30fc\u30c8\u306e\u5834\u6240\u60c5\u5831\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002 useLocation \u306f\u3001\u73fe\u5728\u306e URL \u60c5\u5831\u3092\u542b\u3080\u5834\u6240\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function MyComponent() {\n  const location = useLocation();\n\n  \/\/ ...\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u30a2\u30af\u30bb\u30b9\u30d1\u30b9\u540d: \u5834\u6240\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u3066\u3001\u73fe\u5728\u306eURL\u306e\u30d1\u30b9\u540d\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<code>pathname<\/code><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function MyComponent() {\n  const location = useLocation();\n\n  console.log(location.pathname); \/\/ \u8f93\u51fa\u5f53\u524dURL\u7684\u8def\u5f84\u540d\n\n  \/\/ ...\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>\u691c\u7d22\u30d1\u30e9\u30e1\u30fc\u30bf\u3078\u306e\u30a2\u30af\u30bb\u30b9: \u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u3066\u3001\u73fe\u5728\u306eURL\u306e\u691c\u7d22\u30d1\u30e9\u30e1\u30fc\u30bf\u90e8\u5206\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<code>search<\/code><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function MyComponent() {\n  const location = useLocation();\n\n  console.log(location.search); \/\/ \u8f93\u51fa\u5f53\u524dURL\u7684\u641c\u7d22\u53c2\u6570\n\n  \/\/ ...\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"5\">\n<li>\u30a2\u30af\u30bb\u30b9 \u30cf\u30c3\u30b7\u30e5: \u5834\u6240\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u3066\u3001\u73fe\u5728\u306e URL \u306e\u30cf\u30c3\u30b7\u30e5\u5024\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<code>hash<\/code><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>function MyComponent() {\n  const location = useLocation();\n\n  console.log(location.hash); \/\/ \u8f93\u51fa\u5f53\u524dURL\u7684\u54c8\u5e0c\u503c\n\n  \/\/ ...\n}\n<\/code><\/pre>\n\n\n\n<p>\u8981\u7d04\u3059\u308b\u3068\u3001useLocation \u306f\u3001\u73fe\u5728\u306e URL \u60c5\u5831\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306b React Router \u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002 useLocation \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30d1\u30b9\u540d\u3001\u691c\u7d22\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3001\u30cf\u30c3\u30b7\u30e5\u306a\u3069\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u306e\u73fe\u5728\u306e\u30eb\u30fc\u30c8\u306b\u95a2\u3059\u308b\u5834\u6240\u60c5\u5831\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002 \u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u3066\u3001\u73fe\u5728\u306e URL \u306e\u3055\u307e\u3056\u307e\u306a\u90e8\u5206\u3092\u53d6\u5f97\u304a\u3088\u3073\u64cd\u4f5c\u3057\u3001URL \u60c5\u5831\u306b\u57fa\u3065\u3044\u3066\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u52d5\u4f5c\u3092\u8abf\u6574\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>\u4ed6\u306e\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d5\u30c3\u30af\u306e\u4f7f\u7528\u6cd5\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>useEffect \u306f\u3001\u526f\u4f5c\u7528\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306b React Hooks \u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002 \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u5f8c\u306b\u526f\u4f5c\u7528\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u884c\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528\u52b9\u679c\u306e\u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>useEffect(effectFunction, dependencies);\n<\/code><\/pre>\n\n\n\n<p>\u3053\u3053\u3067\u3001effectFunction \u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u305f\u5f8c\u306b\u5b9f\u884c\u3055\u308c\u308b\u526f\u4f5c\u7528\u95a2\u6570\u3067\u3059\u3002 \u4f9d\u5b58\u95a2\u4fc2\u306f\u3001\u30a8\u30d5\u30a7\u30af\u30c8\u95a2\u6570\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u6307\u5b9a\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u4f9d\u5b58\u95a2\u4fc2\u914d\u5217\u3067\u3059\u3002 \u4f9d\u5b58\u95a2\u4fc2\u304c\u5909\u66f4\u3055\u308c\u308b\u3068\u3001\u30a8\u30d5\u30a7\u30af\u30c8\u95a2\u6570\u304c\u518d\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u526f\u4f5c\u7528\u30ed\u30b8\u30c3\u30af\u306e\u5b9f\u884c: useEffect \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3055\u307e\u3056\u307e\u306a\u526f\u4f5c\u7528\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002 \u526f\u4f5c\u7528\u95a2\u6570\u306f\u540c\u671f\u307e\u305f\u306f\u975e\u540c\u671f\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u30c7\u30fc\u30bf\u53d6\u5f97\u3001\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u3001\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u306a\u3069\u306e\u3055\u307e\u3056\u307e\u306a\u64cd\u4f5c\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>useEffect(() =&gt; {\n  \/\/ \u6267\u884c\u526f\u4f5c\u7528\u903b\u8f91\n  \/\/ ...\n}, []);\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u526f\u4f5c\u7528\u306e\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7: \u526f\u4f5c\u7528\u95a2\u6570\u306f\u3001\u526f\u4f5c\u7528\u3092\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u3059\u308b\u30af\u30ea\u30fc\u30cb\u30f3\u30b0\u95a2\u6570\u3092\u8fd4\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u95a2\u6570\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u7834\u68c4\u3055\u308c\u308b\u524d\u3001\u307e\u305f\u306f\u526f\u4f5c\u7528\u95a2\u6570\u304c\u518d\u5b9f\u884c\u3055\u308c\u308b\u524d\u306b\u547c\u3073\u51fa\u3055\u308c\u307e\u3059\u3002 \u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u3001\u30b5\u30d6\u30b9\u30af\u30e9\u30a4\u30d6\u89e3\u9664\u3001\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u306e\u524a\u9664\u3001\u30bf\u30a4\u30de\u30fc\u306e\u30af\u30ea\u30a2\u306a\u3069\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>useEffect(() =&gt; {\n  \/\/ \u6267\u884c\u526f\u4f5c\u7528\u903b\u8f91\n  \/\/ ...\n\n  \/\/ \u8fd4\u56de\u6e05\u7406\u51fd\u6570\n  return () =&gt; {\n    \/\/ \u6267\u884c\u6e05\u7406\u64cd\u4f5c\n    \/\/ ...\n  };\n}, []);\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u526f\u4f5c\u7528\u3092\u5236\u5fa1\u3059\u308b\u305f\u3081\u306e\u6761\u4ef6\u4ed8\u304d\u5b9f\u884c: \u4f9d\u5b58\u95a2\u4fc2\u914d\u5217\u3067\u4f9d\u5b58\u95a2\u4fc2\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u526f\u4f5c\u7528\u95a2\u6570\u306e\u6761\u4ef6\u4ed8\u304d\u5b9f\u884c\u3092\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002 \u526f\u4f5c\u7528\u95a2\u6570\u306f\u3001\u4f9d\u5b58\u95a2\u4fc2\u304c\u5909\u66f4\u3055\u308c\u305f\u5834\u5408\u306b\u306e\u307f\u518d\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>const [count, setCount] = useState(0);\n\nuseEffect(() =&gt; {\n  \/\/ \u4ec5\u5728count\u53d1\u751f\u53d8\u5316\u65f6\u6267\u884c\u526f\u4f5c\u7528\n  console.log(\"Count changed: \", count);\n}, [count]);\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>\u8907\u6570\u306e\u526f\u4f5c\u7528\u306e\u51e6\u7406: \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067 useEffects \u3092\u8907\u6570\u56de\u4f7f\u7528\u3057\u3066\u3001\u3055\u307e\u3056\u307e\u306a\u526f\u4f5c\u7528\u30ed\u30b8\u30c3\u30af\u3092\u51e6\u7406\u3067\u304d\u307e\u3059\u3002 \u5404 useEffect \u547c\u3073\u51fa\u3057\u306f\u72ec\u7acb\u3057\u3066\u304a\u308a\u3001\u305d\u308c\u3089\u306e\u9593\u306b\u76f8\u95a2\u95a2\u4fc2\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">jsxCopy code<code>useEffect(() =&gt; {\n  \/\/ \u7b2c\u4e00\u4e2a\u526f\u4f5c\u7528\u903b\u8f91\n  \/\/ ...\n}, [dependency1]);\n\nuseEffect(() =&gt; {\n  \/\/ \u7b2c\u4e8c\u4e2a\u526f\u4f5c\u7528\u903b\u8f91\n  \/\/ ...\n}, [dependency2]);\n<\/code><\/pre>\n\n\n\n<p>\u8981\u7d04\u3059\u308b\u3068\u3001useEffect\u306f\u3001\u526f\u4f5c\u7528\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u53cd\u5fdc\u30d5\u30c3\u30af\u306e\u91cd\u8981\u306a\u30d5\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u526f\u4f5c\u7528\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u884c\u3057\u3001\u8fd4\u3055\u308c\u305f\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u95a2\u6570\u3092\u4ecb\u3057\u3066\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u64cd\u4f5c\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002 \u4f9d\u5b58\u95a2\u4fc2\u306e\u914d\u5217\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u526f\u4f5c\u7528\u306e\u6761\u4ef6\u4ed8\u304d\u5b9f\u884c\u3092\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002 useEffect \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u526f\u4f5c\u7528\u3092\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u306b\u95a2\u9023\u4ed8\u3051\u3066\u3001\u526f\u4f5c\u7528\u30ed\u30b8\u30c3\u30af\u3092\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u304a\u3088\u3073\u66f4\u65b0\u3068\u540c\u671f\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>React\u30d5\u30c3\u30af\u306e\u9577\u6240\u3068\u77ed\u6240\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3001ChatGPT\u3092\u8981\u7d04\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>\u53cd\u5fdc\u30d5\u30c3\u30af\u306e\u9577\u6240:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7c21\u7d20\u5316\u3055\u308c\u305f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af:\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u72b6\u614b\u3068\u526f\u4f5c\u7528\u3092\u3088\u308a\u76f4\u611f\u7684\u304b\u3064\u7c21\u5358\u306b\u7ba1\u7406\u3067\u304d\u308b\u305f\u3081\u3001\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u64cd\u4f5c\u3059\u308b\u969b\u306e\u9762\u5012\u306a\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u3092\u6539\u5584\u3059\u308b: Hook \u95a2\u6570\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8 \u30ed\u30b8\u30c3\u30af\u3092\u518d\u5229\u7528\u53ef\u80fd\u306a\u95a2\u6570\u3068\u3057\u3066\u30ab\u30d7\u30bb\u30eb\u5316\u3057\u3001\u30ed\u30b8\u30c3\u30af\u306e\u518d\u5229\u7528\u3092\u3088\u308a\u4fbf\u5229\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u5b9a\u578b\u30b3\u30fc\u30c9\u306e\u524a\u6e1b:\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u6bd4\u8f03\u3057\u3066\u3001Hooks\u306f\u591a\u304f\u306e\u5b9a\u578b\u30b3\u30fc\u30c9\u3092\u524a\u6e1b\u3057\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30b3\u30fc\u30c9\u3092\u3088\u308a\u5408\u7406\u5316\u3057\u3066\u8aad\u307f\u3084\u3059\u304f\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u306e\u5411\u4e0a: Hooks \u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u3092\u3088\u308a\u4fbf\u5229\u3067\u5236\u5fa1\u3057\u3084\u3059\u304f\u3059\u308b\u305f\u3081\u306b\u3001useMemo \u3084 useCallback \u306a\u3069\u306e\u3055\u307e\u3056\u307e\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u30c4\u30fc\u30eb\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u7406\u89e3\u3068\u5b66\u7fd2\u306e\u5bb9\u6613\u3055: \u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3084\u8907\u96d1\u306a\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u30e1\u30bd\u30c3\u30c9\u3068\u6bd4\u8f03\u3057\u3066\u3001\u30d5\u30c3\u30af\u306f\u3088\u308a\u76f4\u611f\u7684\u3067\u4f7f\u3044\u3084\u3059\u304f\u3001\u5b66\u7fd2\u3068\u7406\u89e3\u306e\u96e3\u3057\u3055\u304c\u5c11\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u53cd\u5fdc\u30d5\u30c3\u30af\u306e\u77ed\u6240:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>React\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u4e92\u63db\u6027\u306e\u4f4e\u4e0b:\u30d5\u30c3\u30af\u306fReact 16.8\u3067\u5c0e\u5165\u3055\u308c\u3001\u4ee5\u524d\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306eReact\u306f\u30d5\u30c3\u30af\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u7279\u5b9a\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u307e\u305f\u306f\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u306e\u4e92\u63db\u6027\u306e\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u4f7f\u3044\u3059\u304e\u308b\u3068\u30ed\u30b8\u30c3\u30af\u304c\u65ad\u7247\u5316\u3059\u308b: \u30d5\u30c3\u30af\u3092\u904e\u5270\u306b\u4f7f\u7528\u3059\u308b\u3068\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u304c\u65ad\u7247\u5316\u3055\u308c\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30b3\u30fc\u30c9\u304c\u65ad\u7247\u5316\u3055\u308c\u3001\u4fdd\u5b88\u304c\u56f0\u96e3\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u5b66\u7fd2\u66f2\u7dda:\u7d4c\u9a13\u8c4a\u5bcc\u306aReact\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u3001\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304b\u3089\u30d5\u30c3\u30af\u306e\u4f7f\u7528\u306b\u79fb\u884c\u3059\u308b\u306b\u306f\u3001\u7279\u5b9a\u306e\u5b66\u7fd2\u3068\u9069\u5fdc\u306e\u30d7\u30ed\u30bb\u30b9\u304c\u5fc5\u8981\u3067\u3042\u308a\u3001\u30d5\u30c3\u30af\u306e\u4f7f\u7528\u65b9\u6cd5\u3092\u7fd2\u5f97\u3057\u3066\u7406\u89e3\u3059\u308b\u306b\u306f\u6642\u9593\u304c\u304b\u304b\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30af\u30ed\u30fc\u30b8\u30e3\u306e\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b: \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u3001\u30af\u30ed\u30fc\u30b8\u30e3\u306e\u554f\u984c\u3092\u8a8d\u8b58\u3057\u3001\u4e88\u671f\u3057\u306a\u3044\u554f\u984c\u304c\u767a\u751f\u3057\u306a\u3044\u3088\u3046\u306b\u3001\u72b6\u614b\u304c\u6b63\u3057\u304f\u30ad\u30e3\u30d7\u30c1\u30e3\u304a\u3088\u3073\u66f4\u65b0\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u8981\u7d04\u3059\u308b\u3068\u3001React Hooks\u306b\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30ed\u30b8\u30c3\u30af\u306e\u7c21\u7d20\u5316\u3001\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u3001\u304a\u3088\u3073\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u306b\u304a\u3044\u3066\u660e\u3089\u304b\u306a\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002 \u305f\u3060\u3057\u3001\u30d5\u30c3\u30af\u3092\u904e\u5ea6\u306b\u4f7f\u7528\u3059\u308b\u3068\u3001\u30ed\u30b8\u30c3\u30af\u306e\u65ad\u7247\u5316\u3068\u4e92\u63db\u6027\u306e\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u958b\u767a\u8005\u306f\u5b66\u7fd2\u66f2\u7dda\u3068\u30af\u30ed\u30fc\u30b8\u30e3\u306e\u554f\u984c\u306b\u6ce8\u610f\u3092\u6255\u3044\u3001\u5b9f\u969b\u306e\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u5408\u7406\u7684\u306b\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u3001\u6700\u9ad8\u306e\u958b\u767a\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u3092\u5f97\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067React HooksChatGPT\u3092\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067 React \u30d5\u30c3\u30af\u3092\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u3068\u3001\u30b3\u30fc\u30c9\u306e\u8aad\u307f\u3084\u3059\u3055\u3001\u4fdd\u5b88\u6027\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067 React \u30d5\u30c3\u30af\u3092\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u305f\u3081\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u72b6\u614b\u7ba1\u7406: useState \u3092\u4f7f\u7528\u3057\u3066\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30ed\u30fc\u30ab\u30eb\u72b6\u614b\u3092\u7ba1\u7406\u3057\u307e\u3059\u3002 \u72b6\u614b\u3068\u66f4\u65b0\u30ed\u30b8\u30c3\u30af\u306e\u5b9a\u7fa9\u3092\u540c\u3058\u30ab\u30b9\u30bf\u30e0 \u30d5\u30c3\u30af\u306b\u914d\u7f6e\u3057\u3066\u3001\u30b3\u30fc\u30c9\u306e\u7de8\u6210\u3068\u518d\u5229\u7528\u3092\u6539\u5584\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u526f\u4f5c\u7528\u306e\u51e6\u7406: useEffect \u3092\u4f7f\u7528\u3057\u3066\u3001\u30c7\u30fc\u30bf\u306e\u53d6\u5f97\u3001\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u3001\u30a4\u30d9\u30f3\u30c8\u76e3\u8996\u306a\u3069\u306e\u526f\u4f5c\u7528\u30ed\u30b8\u30c3\u30af\u3092\u51e6\u7406\u3057\u307e\u3059\u3002 \u526f\u4f5c\u7528\u304c\u6b63\u3057\u304f\u5b9f\u884c\u3055\u308c\u3001\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u64cd\u4f5c\u304c\u6b63\u3057\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u4f9d\u5b58\u95a2\u4fc2\u914d\u5217\u3092\u4f7f\u7528\u3057\u3066\u526f\u4f5c\u7528\u306e\u6761\u4ef6\u4ed8\u304d\u5b9f\u884c\u3092\u5236\u5fa1\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af:\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30cb\u30fc\u30ba\u306b\u5fdc\u3058\u3066\u3001\u95a2\u9023\u3059\u308b\u30ed\u30b8\u30c3\u30af\u304c\u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u95a2\u6570\u3068\u3057\u3066\u30ab\u30d7\u30bb\u30eb\u5316\u3055\u308c\u3001\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u6027\u3068\u4fdd\u5b88\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002 \u30ab\u30b9\u30bf\u30e0 \u30d5\u30c3\u30af\u306f\u3001\u95a2\u9023\u3059\u308b\u72b6\u614b\u3068\u526f\u4f5c\u7528\u306e\u30ed\u30b8\u30c3\u30af\u306e\u30bb\u30c3\u30c8\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3057\u3001\u623b\u308a\u5024\u3068\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u5099\u3048\u305f\u67d4\u8edf\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316: useMemo \u3068 useCallback \u3092\u4f7f\u7528\u3057\u3066\u8a08\u7b97\u7d50\u679c\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3001\u95a2\u6570\u3092\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3057\u3066\u3001\u4e0d\u8981\u306a\u8a08\u7b97\u3084\u95a2\u6570\u306e\u518d\u4f5c\u6210\u3092\u56de\u907f\u3057\u307e\u3059\u3002 \u4f9d\u5b58\u95a2\u4fc2\u914d\u5217\u3092\u6b63\u78ba\u306b\u6307\u5b9a\u3057\u3001\u526f\u4f5c\u7528\u3092\u5236\u5fa1\u3057\u3001\u8a08\u7b97\u3092\u6761\u4ef6\u4ed8\u304d\u3067\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u3001\u64cd\u4f5c\u306e\u4e0d\u8981\u306a\u91cd\u8907\u3092\u56de\u907f\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30d5\u30c3\u30af\u306e\u9806\u5e8f\u3068\u6307\u5b9a:\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u306f\u3001\u30d5\u30c3\u30af\u306f\u6240\u5b9a\u306e\u9806\u5e8f\u3067\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u6700\u521d\u306b\u3059\u3079\u3066\u306e useState \u3092\u4f7f\u7528\u3057\u3001\u6b21\u306b useEffect\u3001\u6b21\u306b\u30ab\u30b9\u30bf\u30e0 \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30fc\u30c9\u306e\u4e00\u8cab\u6027\u3068\u8aad\u307f\u3084\u3059\u3055\u3092\u4fdd\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304b\u3089\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3078\u306e\u5909\u63db: \u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u5f90\u3005\u306b\u5909\u63db\u3057\u3001\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u72b6\u614b\u3068\u526f\u4f5c\u7528\u3092\u7ba1\u7406\u3057\u307e\u3059\u3002 \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u7279\u6027\u3068\u30cb\u30fc\u30ba\u306b\u5fdc\u3058\u3066\u3001\u30af\u30e9\u30b9 \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u307e\u305f\u306f\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u9078\u629e\u7684\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u306e\u4e92\u63db\u6027: React Hooks \u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u306e\u4e92\u63db\u6027\u3092\u7dad\u6301\u3057\u3066\u304f\u3060\u3055\u3044\u3002 \u4e00\u90e8\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u30d5\u30c3\u30af\u3092\u76f4\u63a5\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u3084\u3001\u7279\u5225\u306a\u7d71\u5408\u304c\u5fc5\u8981\u306a\u5834\u5408\u304c\u3042\u308b\u305f\u3081\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u6ce8\u610f\u6df1\u304f\u8aad\u307f\u3001\u5bfe\u5fdc\u3059\u308b\u4f7f\u7528\u65b9\u6cd5\u306b\u5f93\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>React \u30d5\u30c3\u30af\u306e\u30eb\u30fc\u30eb\u306b\u5f93\u3046: \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u6700\u4e0a\u4f4d\u30ec\u30d9\u30eb\u3067\u306e\u307f\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3001\u30eb\u30fc\u30d7\u3001\u6761\u4ef6\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3001\u30cd\u30b9\u30c8\u3055\u308c\u305f\u95a2\u6570\u3067\u306f\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u306a\u3044\u306a\u3069\u3001React \u30d5\u30c3\u30af\u306e\u30eb\u30fc\u30eb\u3092\u7406\u89e3\u3057\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u30eb\u30fc\u30eb\u306b\u5f93\u3046\u3068\u3001\u4e88\u671f\u3057\u306a\u3044\u52d5\u4f5c\u3084\u30a8\u30e9\u30fc\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u3064\u307e\u308a\u3001React Hooks\u3092\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u306b\u306f\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30cb\u30fc\u30ba\u3068\u7279\u6027\u306b\u57fa\u3065\u3044\u3066\u67d4\u8edf\u306a\u8abf\u6574\u304c\u5fc5\u8981\u3067\u3059\u3002 \u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3068\u304d\u306f\u3001\u30b3\u30fc\u30c9\u306e\u69cb\u6210\u3001\u518d\u5229\u7528\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u3001React \u30d5\u30c3\u30af\u306e\u30eb\u30fc\u30eb\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u5f93\u3063\u3066\u3001\u30b3\u30fc\u30c9\u306e\u8aad\u307f\u3084\u3059\u3055\u3001\u4fdd\u5b88\u6027\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/edu.ujhb.org\/?p=2599\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=96&amp;q=75\" alt=\"User\"\/><\/figure>\n\n\n\n<p>ChatGPT\u3067\u3088\u308a\u591a\u304f\u306e\u53cd\u5fdc\u30d5\u30c3\u30af\u3092\u63a2\u7d22\u3059\u308b\u53ef\u80fd\u6027\u3092\u8a73\u7d30\u306b\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>React Hooks \u306b\u306f\u3001useState\u3001useEffect\u3001useContext \u306a\u3069\u306e\u591a\u304f\u306e\u7d44\u307f\u8fbc\u307f\u30d5\u30c3\u30af\u95a2\u6570\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u3088\u308a\u591a\u304f\u306e React \u30d5\u30c3\u30af\u306e\u53ef\u80fd\u6027\u3092\u63a2\u308b\u305f\u3081\u306b\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3088\u308a\u591a\u304f\u306e\u30d5\u30c3\u30af\u95a2\u6570\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3067\u304d\u307e\u3059\u3002 \u53ef\u80fd\u6027\u3092\u63a2\u308b\u305f\u3081\u306e\u3044\u304f\u3064\u304b\u306e\u65b9\u5411\u6027\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>useValidation: \u30d5\u30a9\u30fc\u30e0\u5165\u529b\u307e\u305f\u306f\u305d\u306e\u4ed6\u306e\u30c7\u30fc\u30bf\u306e\u6709\u52b9\u6027\u3092\u691c\u8a3c\u3059\u308b\u305f\u3081\u306b\u691c\u8a3c\u30ed\u30b8\u30c3\u30af\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3002<\/li>\n\n\n\n<li>useLocalStorage: \u30ed\u30fc\u30ab\u30eb \u30b9\u30c8\u30ec\u30fc\u30b8\u5185\u306e\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u305f\u3081\u306e\u30ed\u30fc\u30ab\u30eb \u30b9\u30c8\u30ec\u30fc\u30b8 \u30ed\u30b8\u30c3\u30af\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b Hook \u95a2\u6570\u3002<\/li>\n\n\n\n<li>useMediaQuery: \u30c7\u30d0\u30a4\u30b9\u306e\u30e1\u30c7\u30a3\u30a2\u30af\u30a8\u30ea\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30b9\u30bf\u30a4\u30eb\u307e\u305f\u306f\u52d5\u4f5c\u3092\u52d5\u7684\u306b\u8abf\u6574\u3059\u308b\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u30c7\u30b6\u30a4\u30f3\u7528\u306e\u30d5\u30c3\u30af\u95a2\u6570\u3002<\/li>\n\n\n\n<li>useDebounce: \u983b\u7e41\u306b\u30c8\u30ea\u30ac\u30fc\u3055\u308c\u308b\u30a4\u30d9\u30f3\u30c8\u307e\u305f\u306f\u95a2\u6570\u304c\u5b9f\u884c\u3055\u308c\u308b\u56de\u6570\u3092\u5236\u9650\u3059\u308b\u30ab\u30b9\u30bf\u30e0\u5b89\u5b9a\u5316\u30ed\u30b8\u30c3\u30af\u3092\u5099\u3048\u305f\u30d5\u30c3\u30af\u95a2\u6570\u3002<\/li>\n\n\n\n<li>useThrottle: \u6307\u5b9a\u3057\u305f\u6642\u9593\u9593\u9694\u3067\u95a2\u6570\u3092\u5b9f\u884c\u3059\u308b\u983b\u5ea6\u3092\u5236\u5fa1\u3059\u308b\u30ab\u30b9\u30bf\u30e0\u8abf\u6574\u30ed\u30b8\u30c3\u30af\u3092\u6301\u3064\u30d5\u30c3\u30af\u95a2\u6570\u3002<\/li>\n\n\n\n<li>useAnimation: \u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u52b9\u679c\u30ed\u30b8\u30c3\u30af\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3057\u3066\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u306e\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u52b9\u679c\u306e\u5236\u5fa1\u3068\u7ba1\u7406\u3092\u5b9f\u88c5\u3059\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3002<\/li>\n\n\n\n<li>use\u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3: \u30c7\u30fc\u30bf\u30da\u30fc\u30b8\u30f3\u30b0\u306e\u8aad\u307f\u8fbc\u307f\u3068\u30da\u30fc\u30b8\u5207\u308a\u66ff\u3048\u3092\u7ba1\u7406\u3059\u308b\u305f\u3081\u306e\u30ab\u30b9\u30bf\u30e0\u30da\u30fc\u30b8\u30f3\u30b0\u30ed\u30b8\u30c3\u30af\u306e\u30d5\u30c3\u30af\u95a2\u6570\u3002<\/li>\n\n\n\n<li>useWebSocket: \u30b5\u30fc\u30d0\u30fc\u3068\u306e\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u901a\u4fe1\u306e\u305f\u3081\u306b WebSocket \u901a\u4fe1\u30ed\u30b8\u30c3\u30af\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3002<\/li>\n\n\n\n<li>useGeoLocation:\u30c7\u30d0\u30a4\u30b9\u306e\u5730\u7406\u7684\u4f4d\u7f6e\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d5\u30c3\u30af\u95a2\u6570\u306f\u3001\u5730\u7406\u7684\u4f4d\u7f6e\u306b\u5fdc\u3058\u305f\u6e2c\u4f4d\u3084\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u306a\u3069\u306e\u6a5f\u80fd\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>useSpeechRecognition: \u97f3\u58f0\u5165\u529b\u304a\u3088\u3073\u97f3\u58f0\u5bfe\u8a71\u95a2\u6570\u306e\u97f3\u58f0\u8a8d\u8b58\u30ed\u30b8\u30c3\u30af\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b\u30d5\u30c3\u30af\u95a2\u6570\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306f\u53ef\u80fd\u6027\u306e\u307b\u3093\u306e\u4e00\u4f8b\u3067\u3042\u308a\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30cb\u30fc\u30ba\u3068\u5275\u9020\u6027\u306b\u5fdc\u3058\u3066\u3001\u3088\u308a\u591a\u304f\u306e\u30d5\u30c3\u30af\u6a5f\u80fd\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3067\u304d\u307e\u3059\u3002 \u30ab\u30b9\u30bf\u30e0\u30d5\u30c3\u30af\u306f\u3001\u4e00\u822c\u7684\u306a\u30ed\u30b8\u30c3\u30af\u3092\u62bd\u8c61\u5316\u304a\u3088\u3073\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u3001\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u3068\u4fdd\u5b88\u6027\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002 \u3088\u308a\u591a\u304f\u306e React \u30d5\u30c3\u30af\u3092\u8abf\u3079\u308b\u3053\u3068\u3067\u3001React \u30a2\u30d7\u30ea\u306e\u6a5f\u80fd\u3068\u52b9\u679c\u3092\u3088\u308a\u591a\u304f\u306e\u30c9\u30e1\u30a4\u30f3\u3068\u30b7\u30ca\u30ea\u30aa\u306b\u62e1\u5f35\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>IT\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306e\u30d3\u30c7\u30aa\u3092\u3084\u308a\u305f\u3044\u306e\u3067 &hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2622","post","type-post","status-publish","format-standard","hentry","category-material"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=\/wp\/v2\/posts\/2622","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2622"}],"version-history":[{"count":1,"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=\/wp\/v2\/posts\/2622\/revisions"}],"predecessor-version":[{"id":2623,"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=\/wp\/v2\/posts\/2622\/revisions\/2623"}],"wp:attachment":[{"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2622"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2622"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}