{"version":"1.0","description":"Object.freeze\u306b\u906d\u9047\u3002 const CONFIG = Object.freeze({ VERSION:'1.4.7', TIME_ZONE:'Asia/Tokyo', URL:'https://example.com', num:3 }) \u305d\u306e\u307e\u307e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u51cd\u7d50\u3059\u308b\u3002 const\u306f\u518d\u4ee3\u5165\u3092\u9632\u304e\u3001Oject freeze\u306f\u4e2d\u8eab\u306e\u66f8\u304d\u63db\u3048\u3001\u8ffd\u52a0\u3092\u9632\u3050\u3068\u3002 //const\u306e\u307f function check(){ //1.const\u306e\u307f const a = {value:1}; a.value = 999; console.log(`1.const\u306e\u307f -> a.value : ${a\u2026","url":"https://lhazan.hateblo.jp/entry/2026/10/04/002245","title":"\u7406\u89e3\u8ca0\u50b5003","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/L/Lhazan/20261004/20261004001341.png","width":"100%","author_url":"https://blog.hatena.ne.jp/Lhazan/","provider_name":"Hatena Blog","height":"190","blog_url":"https://lhazan.hateblo.jp/","author_name":"Lhazan","provider_url":"https://hatena.blog","published":"2026-10-04 00:22:45","blog_title":"2277","categories":["javascript","\u7406\u89e3\u8ca0\u50b5"],"type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Flhazan.hateblo.jp%2Fentry%2F2026%2F10%2F04%2F002245\" title=\"\u7406\u89e3\u8ca0\u50b5003 - 2277\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}