{"blog_title":"potisan\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30e1\u30e2","author_name":"potisan","version":"1.0","published":"2020-03-22 00:00:00","width":"100%","provider_url":"https://hatena.blog","title":"JavaScript ECMAScript\u306e\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u5024\u3068\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u30c7\u30fc\u30bf\u578b\u306b\u3064\u3044\u3066\u8abf\u3079\u305f\u3053\u3068","description":"2021/3/10\uff1a\u3053\u306e\u8a18\u4e8b\u306f\u5225\u306e\u30d6\u30ed\u30b0\u3067\u6295\u7a3f\u3057\u305f\u8a18\u4e8b\u3092\u79fb\u52d5\u3057\u305f\u3082\u306e\u3067\u3059\u3002 \u4e45\u3057\u3076\u308a\u306bJavaScript\u3092\u89e6\u3063\u305f\u3089\u5f15\u6570\u306e\u6587\u5b57\u5217\u5224\u5b9a\u3067\u60a9\u3093\u3060\u306e\u3067\u3001\u5468\u8fba\u60c5\u5831\u3068\u3057\u3066\u8abf\u3079\u305f\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u5024\u3068\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u30c7\u30fc\u30bf\u578b\u306b\u3064\u3044\u3066\u8a18\u9332\u3057\u307e\u3059\u3002 \u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u5024\u3068\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u30c7\u30fc\u30bf\u578b \u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u5024\u3068Object.getPrototypeOf() \u304a\u307e\u3051 \u6587\u5b57\u5217\u5224\u5b9a Object.getPrototypeOf(...).valueOf()\u306e\u623b\u308a\u5024\u306f\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u30c7\u30fc\u30bf\u578b\u3054\u3068\u306b\u56fa\u5b9a\u307e\u305f\u306f\u30a8\u30e9\u30fc \u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u5024\u3068\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u30c7\u30fc\u30bf\u578b ECMAScript\u6700\u65b0\u72481\u306f7\u7a2e\u985e\u306e\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u30c7\u30fc\u30bf\u578b\u3068\u305d\u308c\u305e\u308c\u306b\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u5024\u3092\u5b9a\u7fa9\u2026","image_url":null,"type":"rich","height":"190","author_url":"https://blog.hatena.ne.jp/potisan/","categories":["JavaScript"],"blog_url":"https://potisan-programming-memo.hatenablog.jp/","provider_name":"Hatena Blog","url":"https://potisan-programming-memo.hatenablog.jp/entry/2020/03/22/000000","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fpotisan-programming-memo.hatenablog.jp%2Fentry%2F2020%2F03%2F22%2F000000\" title=\"JavaScript ECMAScript\u306e\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u5024\u3068\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u30c7\u30fc\u30bf\u578b\u306b\u3064\u3044\u3066\u8abf\u3079\u305f\u3053\u3068 - potisan\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\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>"}