{"image_url":null,"url":"https://tech.fun-toy-life.com/entry/2026/05/20/202142","author_name":"plarail_hangout","version":"1.0","description":"React\u306euseState\u30fbuseRef\u30fbconst\u306e\u9055\u3044\uff1a\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3068\u5024\u306e\u4fdd\u6301\u3092\u7406\u89e3\u3059\u308b \u306f\u3058\u3081\u306b React\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u4e2d\u3067\u5024\u3092\u6271\u3046\u3068\u304d\u3001useState\u30fbuseRef\u30fbconst \u306e\u3069\u308c\u3092\u4f7f\u3048\u3070\u3044\u3044\u304b\u8ff7\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u300c\u5024\u306e\u4fdd\u6301\u300d\u3068\u300c\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u300d\u306e\u52d5\u304d\u304c\u7570\u306a\u308a\u307e\u3059\u3002 \u5024\u306e\u4fdd\u6301 \u5909\u66f4\u6642\u306b\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0 const\uff08\u901a\u5e38\u5909\u6570\uff09 \u2717\uff08\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3054\u3068\u306b\u521d\u671f\u5316\uff09 \u2014 useState \u2705 \u2705 useRef \u2705 \u2717 \u3053\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u3069\u308c\u3092\u4f7f\u3046\u3079\u304d\u304b\u5224\u65ad\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 const\uff08\u901a\u5e38\u5909\u6570\uff09\uff1a\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3054\u3068\u306b\u521d\u671f\u5316\u3055\u308c\u308b \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u3067 const \u3067\u2026","width":"100%","published":"2026-05-20 20:21:42","blog_url":"https://tech.fun-toy-life.com/","title":"React\u306euseState\u30fbuseRef\u30fbconst\u306e\u9055\u3044\uff1a\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3068\u5024\u306e\u4fdd\u6301\u3092\u7406\u89e3\u3059\u308b","height":"190","blog_title":"Engineering Tech Dojo","type":"rich","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/plarail_hangout/","categories":["React","TypeScript"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftech.fun-toy-life.com%2Fentry%2F2026%2F05%2F20%2F202142\" title=\"React\u306euseState\u30fbuseRef\u30fbconst\u306e\u9055\u3044\uff1a\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3068\u5024\u306e\u4fdd\u6301\u3092\u7406\u89e3\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>"}