{"author_url":"https://blog.hatena.ne.jp/plarail_hangout/","provider_name":"Hatena Blog","height":"190","version":"1.0","type":"rich","author_name":"plarail_hangout","description":"React\u306euseContext\u5165\u9580\uff1a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u72b6\u614b\u3092\u5171\u6709\u3059\u308b useContext\u3068\u306f useContext \u306f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30c4\u30ea\u30fc\u3092\u901a\u3058\u3066\u5024\u3092\u5171\u6709\u3059\u308b\u305f\u3081\u306e\u30d5\u30c3\u30af\u3067\u3059\u3002props\u306e\u30d0\u30b1\u30c4\u30ea\u30ec\u30fc\uff08\u4e2d\u9593\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066props\u3092\u6e21\u3057\u7d9a\u3051\u308b\u554f\u984c\uff09\u3092\u89e3\u6c7a\u3067\u304d\u307e\u3059\u3002 props\u306e\u30d0\u30b1\u30c4\u30ea\u30ec\u30fc\u3068\u306f // \u554f\u984c\uff1aButton\u306b\u6e21\u3057\u305f\u3044\u3060\u3051\u306a\u306e\u306bMiddle\u3067\u3082\u53d7\u3051\u53d6\u308b\u5fc5\u8981\u304c\u3042\u308b function App() { const [theme, setTheme] = useState('dark') return <Middle theme={theme} /> } function M\u2026","url":"https://tech.fun-toy-life.com/entry/2026/06/06/105139","categories":["React","TypeScript"],"blog_url":"https://tech.fun-toy-life.com/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftech.fun-toy-life.com%2Fentry%2F2026%2F06%2F06%2F105139\" title=\"React\u306euseContext\u5165\u9580\uff1a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u72b6\u614b\u3092\u5171\u6709\u3059\u308b - Engineering Tech Dojo\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","provider_url":"https://hatena.blog","title":"React\u306euseContext\u5165\u9580\uff1a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u72b6\u614b\u3092\u5171\u6709\u3059\u308b","blog_title":"Engineering Tech Dojo","published":"2026-06-06 10:51:39","image_url":null}