{"author_name":"matsutoba","categories":["React"],"author_url":"https://blog.hatena.ne.jp/matsutoba/","type":"rich","provider_name":"Hatena Blog","height":"190","image_url":null,"published":"2023-02-10 14:46:05","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmatsutoba.hateblo.jp%2Fentry%2F2023%2F02%2F10%2F144605\" title=\"React\u306e\u30e1\u30e2\u5316\u306e\u899a\u66f8 - matsutoba\u2019s blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"\u3044\u3064\u3082\u5fd8\u308c\u308bReact\u306e\u30e1\u30e2\u5316\u95a2\u9023\u306e\u30e1\u30e2\u3002 \u5b9a\u6570\u5024\u306f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u5916\u306b\u51fa\u3059 \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u6bce\u56de\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u751f\u6210\u3055\u308c\u3066\u3057\u307e\u3046\u306e\u3067\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u5916\u306b\u51fa\u3059\u3002 // \u666e\u901a\u306b\u66f8\u3044\u305f\u3068\u304d const ButtonElement = () => { const foo = ['a', 'b']; }// \u5b9a\u6570\u306f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u5916\u306b\u51fa\u3059 const foo = ['a', 'b']; const ButtonElement = React.memo(() => { }) props\u304c\u5909\u308f\u3089\u306a\u3044\u9650\u308a\u63cf\u753b\u5185\u5bb9\u304c\u5909\u5316\u3057\u306a\u3044\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u30e1\u30e2\u5316\u3059\u308b props\u306b\u4f9d\u5b58\u3057\u306a\u3044\u56fa\u5b9a\u8868\u793a\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u2026","blog_url":"https://matsutoba.hateblo.jp/","width":"100%","blog_title":"matsutoba\u2019s blog","url":"https://matsutoba.hateblo.jp/entry/2023/02/10/144605","version":"1.0","provider_url":"https://hatena.blog","title":"React\u306e\u30e1\u30e2\u5316\u306e\u899a\u66f8"}