{"blog_url":"https://chaika.hatenablog.com/","title":"React \u30bd\u30fc\u30c8\u3057\u305f\u3068\u304d\u306e key \u306b\u30cf\u30de\u308b","description":"React\u5165\u9580\u521d\u5fc3\u8005\u30de\u30f3\u3068\u3057\u3066\u5f15\u304d\u7d9a\u304d\u30a8\u30af\u30bb\u30eb\u7684\u306a\u30e2\u30ce\u3092\u4f5c\u308b\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3092\u3084\u3063\u3066\u3044\u307e\u3059\u3002 \u4eca\u56de\u30c6\u30fc\u30d6\u30eb\u3092\u30bd\u30fc\u30c8\u3057\u3088\u3046\u3068\u3057\u3066\u30cf\u30de\u3063\u305f\u306e\u3067\u30e1\u30e2\u3002 react: ^16.8.3 react-dom: ^16.8.3 \u30ea\u30b9\u30c8\u306e\u3088\u3046\u306a\u914d\u5217\u304b\u3089\u4f5c\u3089\u308c\u308b\u30a8\u30ec\u30e1\u30f3\u30c8\u306b\u306f key \u3092\u6307\u5b9a\u3059\u308b V-DOM\u306fDOM\u3068\u540c\u3058\u30c4\u30ea\u30fc\u69cb\u9020\u306b\u306a\u3063\u3066\u3044\u3066\u3001\u69cb\u9020\u3092\u6bd4\u8f03\u3057\u3066\u9055\u3044\u304c\u3042\u308b\u3068\u305d\u306e\u7b87\u6240\u3092\u5b9f\u969b\u306eDOM\u306b\u53cd\u6620\u3055\u305b\u308b\u4ed5\u7d44\u307f\u3002 \u30ea\u30b9\u30c8\u69cb\u9020\u306f\u5909\u66f4\u304c\u3042\u3063\u3066\u3082\u3001\u30ea\u30b9\u30c8\u5185\u306e\u3069\u3053\u306b\u5909\u66f4\u304c\u3042\u3063\u305f\u306e\u304b\u5224\u65ad\u3067\u304d\u306a\u3044\u3002 key\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3068\u3001key\u3092\u983c\u308a\u306b\u3069\u3053\u304c\u5909\u66f4\u3055\u308c\u305f\u306e\u304b\u3092React\u304c\u5224\u65ad\u3067\u304d\u308b\u306e\u3067\u3001\u66f4\u65b0\u306e\u53cd\u6620\u304c\u6700\u5c0f\u9650\u306b\u306a\u308b\u3063\u3066\u4e8b\u3063\u307d\u3044\u3002\u2026","height":"190","provider_name":"Hatena Blog","width":"100%","published":"2019-03-22 08:30:00","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/k/kikiki-kiki/20190316/20190316224901.png","blog_title":"\u304b\u3082\u30e1\u30e2","author_name":"kikiki-kiki","provider_url":"https://hatena.blog","categories":["React","JavaScript"],"url":"https://chaika.hatenablog.com/entry/2019/03/22/083000","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fchaika.hatenablog.com%2Fentry%2F2019%2F03%2F22%2F083000\" title=\"React \u30bd\u30fc\u30c8\u3057\u305f\u3068\u304d\u306e key \u306b\u30cf\u30de\u308b - \u304b\u3082\u30e1\u30e2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","author_url":"https://blog.hatena.ne.jp/kikiki-kiki/","version":"1.0"}