{"blog_title":"\u304b\u3082\u30e1\u30e2","url":"https://chaika.hatenablog.com/entry/2020/01/03/090000","categories":["React","React Hooks","JavaScript"],"version":"1.0","image_url":"https://m.media-amazon.com/images/I/41QI9bG5gXL._SL500_.jpg","published":"2020-01-03 09:00:00","author_name":"kikiki-kiki","type":"rich","blog_url":"https://chaika.hatenablog.com/","height":"190","description":"useState \u306e setter \u3067\u5024\u3092\u66f4\u65b0\u3057\u3066\u3082\u5373\u6642 state \u306b\u53cd\u6620\u3055\u308c\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u66f4\u65b0\u3055\u308c\u305f state \u3092\u4f7f\u3063\u3066\u5225\u306e\u51e6\u7406\u3092\u884c\u3044\u305f\u3044\u6642\u306a\u3069\u3067\u610f\u56f3\u3057\u306a\u3044\u52d5\u4f5c\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \ud83d\udc1e function Counter({ initCount }) { const [count, setCount] = useState(initCount); const [square, setSquare] = useState(initCount * initCount); const updateSquare = () => { setSquare( count * count \u2026","provider_url":"https://hatena.blog","title":"React Hooks useState state \u306e\u66f4\u65b0\u306b\u30cf\u30de\u308b","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fchaika.hatenablog.com%2Fentry%2F2020%2F01%2F03%2F090000\" title=\"React Hooks useState state \u306e\u66f4\u65b0\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>","author_url":"https://blog.hatena.ne.jp/kikiki-kiki/","width":"100%"}