{"published":"2022-08-19 07:00:00","description":"\u306f\u3058\u3081\u306b React\u306euseState\u3092\u7528\u3044\u3066\u914d\u5217\u3092\u64cd\u4f5c\u3059\u308b\u65b9\u6cd5\u3067\u5c11\u3057\u30cf\u30de\u3063\u305f\u306e\u3067\u5099\u5fd8\u9332\u3068\u3057\u3066\u8a18\u8f09\u3057\u307e\u3059\u3002 push\u5f8c\u306bDispatch\u3092\u7528\u3044\u3066\u66f4\u65b0\u3057\u3066\u3082\u53cd\u6620\u3055\u308c\u306a\u3044 \u6700\u521d\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9f\u88c5\u3057\u3066\u3044\u305f\u306e\u3067\u3059\u304c\u3001\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u304c\u3055\u308c\u305a...\u3002 // \u5024\u3092\u5b9a\u7fa9 const [value, setValue] = useState([]) // \u914d\u5217\u3078\u5024\u3092\u633f\u5165 value.push(something); // useState\u3092\u4ecb\u3057\u3066value\u3092\u66f4\u65b0\u3057\u3066\u3044\u308b\u306e\u3067\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u308b\u306f\u305a...\u3002 setValue(value) \u3069\u3046\u3084\u3089\u73fe\u5728\u306eState\u306e\u5024\u3092\u76f4\u63a5\u5909\u3048\u308b\u306e\u306fNG\u3067\u5225\u306e\u914d\u5217\u3092\u4f5c\u6210\u3057\u3066\u6e21\u3059\u307b\u3046\u2026","width":"100%","image_url":null,"author_name":"bookreadkun","categories":["React"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Foooomincrypto.hatenadiary.jp%2Fentry%2F2022%2F08%2F19%2F070000\" title=\"useState\u3067\u914d\u5217\u3092\u6271\u3046\u5099\u5fd8\u9332 - \u304a\u30fc\u307f\u3093\u30d6\u30ed\u30b0\" 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://oooomincrypto.hatenadiary.jp/entry/2022/08/19/070000","blog_url":"https://oooomincrypto.hatenadiary.jp/","type":"rich","blog_title":"\u304a\u30fc\u307f\u3093\u30d6\u30ed\u30b0","height":"190","title":"useState\u3067\u914d\u5217\u3092\u6271\u3046\u5099\u5fd8\u9332","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","version":"1.0","author_url":"https://blog.hatena.ne.jp/bookreadkun/"}