{"categories":["React","JavaScript"],"blog_url":"https://sho03.hatenablog.com/","image_url":null,"author_url":"https://blog.hatena.ne.jp/sho03/","provider_url":"https://hatena.blog","title":"\u30d5\u30c3\u30af","width":"100%","type":"rich","blog_title":"\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u30e1\u30e2","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsho03.hatenablog.com%2Fentry%2F2020%2F08%2F23%2F103336\" title=\"\u30d5\u30c3\u30af - \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\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_name":"sho03","published":"2020-08-23 10:33:36","provider_name":"Hatena Blog","height":"190","description":"React16.8\u304b\u3089\u5c0e\u5165\u3055\u308c\u305f\u30d5\u30c3\u30af\u306e\u57fa\u672c\u3092\u5b66\u3073\u307e\u3059\u3002 \u6982\u8981 \u7c21\u5358\u306b\u8a00\u3046\u3068\u3001\u95a2\u6570\u578b\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306bstate\u3092\u6301\u305f\u305b\u308b\u4ed5\u7d44\u307f\u306e\u3053\u3068\u3067\u3059\u3002\u4ee5\u4e0b\u3001\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u304b\u3089\u306e\u5f15\u7528\u3067\u3059\u3002 \u30d5\u30c3\u30af\u3068\u306f\u3001\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b state \u3084\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u3068\u3044\u3063\u305f React \u306e\u6a5f\u80fd\u3092 \u201c\u63a5\u7d9a\u3059\u308b (hook into)\u201d \u305f\u3081\u306e\u95a2\u6570\u3067\u3059\u3002 \u30d5\u30c3\u30af\u306e\u30b3\u30fc\u30c9\u4f8b \u4ee5\u4e0b\u306b\u3001\u30d5\u30c3\u30af\u3092\u5229\u7528\u3057\u305f\u5834\u5408\u306e\u30b3\u30fc\u30c9\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002 \u3084\u3063\u3066\u3044\u308b\u3053\u3068\u306f\u5358\u7d14\u3067\u3001\u30dc\u30bf\u30f3\u3092\u62bc\u3059\u305f\u3073\u306b\u753b\u9762\u4e0a\u306e\u30ab\u30a6\u30f3\u30bf\u304c\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u3055\u308c\u3066\u3044\u304d\u307e\u3059\u3002 import React, {useState} from 'react'; //\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u305f\u4f8b exp\u2026","url":"https://sho03.hatenablog.com/entry/2020/08/23/103336","version":"1.0"}