{"image_url":null,"height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyamadataro3.hatenablog.com%2Fentry%2F2020%2F02%2F13%2F123444\" title=\"ECMAScript\u306e\u5185\u90e8\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u305f\u3061 - memorandum\" 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%","description":"JS\u306b\u3064\u3044\u3066\u3042\u307e\u308a\u8a73\u3057\u304f\u306a\u3044\u306e\u3067\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u304c\u9762\u767d\u304b\u3063\u305f\u3002 v8.dev \u30ec\u30ad\u30b7\u30ab\u30eb\u74b0\u5883\u3068\u304b\u3001\u30d7\u30ed\u30d1\u30c6\u30a3\u30fc\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u3068\u304b\u3001\u74b0\u5883\u30ec\u30b3\u30fc\u30c9\u3068\u304b\u3001JS\u306espec\u306b\u3060\u3051\u767b\u5834\u3059\u308b\u578b\u306e\u89e3\u8aac\u306f\u3053\u3053\u306b\u3042\u308b\u3002 https://tc39.es/ecma262/#sec-ecmascript-specification-types spec\u7528\u306b\u5b9a\u7fa9\u3055\u308c\u305f\u62bd\u8c61\u64cd\u4f5c\u3068\u3044\u3046\u95a2\u6570\u304c\u3042\u308b\u3002 https://tc39.es/ecma262/#sec-abstract-operations [[]] \u3067\u56f2\u307e\u308c\u3066\u3044\u308b\u306e\u306f\u5185\u90e8\u30b9\u30ed\u30c3\u30c8\u3082\u3057\u304f\u306f\u5185\u90e8\u30e1\u30bd\u30c3\u30c9\u3068\u3044\u3046\u3082\u306e\u3002 \u5185\u90e8\u30b9\u30ed\u30c3\u30c8\u306fJS\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u7279\u5b9a\u306e\u65b9\u306e\u30c7\u30fc\u30bf\u30e1\u30f3\u30d0\u306e\u3053\u3068\u3067\u2026","provider_url":"https://hatena.blog","author_name":"yamadataro3","blog_title":"memorandum","categories":[],"provider_name":"Hatena Blog","url":"https://yamadataro3.hatenablog.com/entry/2020/02/13/123444","blog_url":"https://yamadataro3.hatenablog.com/","author_url":"https://blog.hatena.ne.jp/yamadataro3/","version":"1.0","published":"2020-02-13 12:34:44","type":"rich","title":"ECMAScript\u306e\u5185\u90e8\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u305f\u3061"}