{"provider_name":"Hatena Blog","title":"\u72b6\u614b\u306f\u5358\u4e00\u306e\u7d4c\u8def\u3092\u4f7f\u3063\u3066\u53c2\u7167\u3057\u3088\u3046","blog_title":"Object.create(null)","provider_url":"https://hatena.blog","height":"190","version":"1.0","author_url":"https://blog.hatena.ne.jp/susisu/","categories":["\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsusisu.hatenablog.com%2Fentry%2F2022%2F01%2F16%2F003954\" title=\"\u72b6\u614b\u306f\u5358\u4e00\u306e\u7d4c\u8def\u3092\u4f7f\u3063\u3066\u53c2\u7167\u3057\u3088\u3046 - Object.create(null)\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://susisu.hatenablog.com/entry/2022/01/16/003954","type":"rich","blog_url":"https://susisu.hatenablog.com/","width":"100%","image_url":null,"author_name":"susisu","published":"2022-01-16 00:39:54","description":"React \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3044\u3066 single source of truth \u3068\u8a00\u3063\u305f\u5834\u5408, \u8907\u6570\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u540c\u3058\u5024\u304c\u5fc5\u8981\u306a\u3068\u304d\u306f, \u305d\u308c\u305e\u308c\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u72ec\u7acb\u306b\u72b6\u614b\u3092\u7ba1\u7406\u3057\u3066\u4e92\u3044\u306b\u540c\u671f\u3092\u3068\u308b\u306e\u3067\u306f\u306a\u304f, \u305f\u3060\u4e00\u3064\u306e\u5834\u6240\u3067\u72b6\u614b\u3092\u7ba1\u7406\u3057, \u5168\u3066\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u305d\u308c\u3092\u53c2\u7167\u3059\u3079\u304d, \u3068\u3044\u3046\u8a2d\u8a08\u306e\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3068\u3057\u3066\u8aac\u660e\u3055\u308c\u307e\u3059. There should be a single \u201csource of truth\u201d for any data that changes in a React application. Usually, the state is first added to\u2026"}