{"type":"rich","height":"190","provider_name":"Hatena Blog","image_url":null,"description":"JavaScript\u306e\u95a2\u6570\u306f\u539f\u5247\u7684\u306b\u3001\u751f\u6210\u3055\u308c\u305f\u77ac\u9593\u306bprototype\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u6301\u3064\u3002 \u305d\u306e\u4e2d\u8eab\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3042\u308a\u3001constructor\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u307f\u3092\u6301\u3064\u3002\u3053\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u3001\u95a2\u6570\u81ea\u8eab\u3092\u53c2\u7167\u3057\u3066\u3044\u308b\u3002 function myFunc(){}; console.log(Object.getOwnPropertyNames(myFunc)); // [ 'length', 'name', 'arguments', 'caller', 'prototype' ] // \u660e\u793a\u3057\u306a\u304f\u3066\u3082\u3001\u4e0a\u8a18\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u6301\u3064 console.log(Object.getOwnPropertyNames(myF\u2026","blog_title":"30\u6b73\u304b\u3089\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0","width":"100%","author_url":"https://blog.hatena.ne.jp/numb_86/","published":"2016-06-24 00:36:52","author_name":"numb_86","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnumb86-tech.hatenablog.com%2Fentry%2F2016%2F06%2F24%2F003652\" title=\"constructor\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u3064\u3044\u3066 - 30\u6b73\u304b\u3089\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://numb86-tech.hatenablog.com/entry/2016/06/24/003652","blog_url":"https://numb86-tech.hatenablog.com/","title":"constructor\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u3064\u3044\u3066","categories":["JavaScript\u306e\u8a00\u8a9e\u4ed5\u69d8(ES5)"],"version":"1.0","provider_url":"https://hatena.blog"}