{"provider_name":"Hatena Blog","description":"function Foo(){ this.x = function(){} } new Foo().x === new Foo().x //-> false \u305d\u308a\u3083\u3001\u305d\u3046\u306a\u308b\u3088\u306a\u3041\u3002\u3053\u3046\u3044\u3046\u66f8\u304d\u65b9\u3092\u3057\u3066\u3044\u308b\u3068\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u6570\u3060\u3051\u30e1\u30bd\u30c3\u30c9\u5b9a\u7fa9\u306e\u5b9f\u4f53\u304c\u3067\u304d\u3066\u3057\u307e\u3046\u3002 function Foo(){ } Foo.prototype = { x: function(){} } new Foo().x === new Foo().x //-> true \u3053\u3046\u3059\u308b\u306e\u304b\u306a\uff1fP.S. \u3053\u308c\u3060\u3068prototype\u306b\u3059\u3067\u306b\u5024\u304c\u5165\u3063\u3066\u3044\u305f\u5834\u5408\u6d88\u3048\u3066\u3057\u307e\u3046\u306e\u3067prototype.x = function...\u306e\u65b9\u304c\u3088\u2026","url":"https://nishiohirokazu.hatenadiary.org/entry/20101016/1287228301","blog_url":"https://nishiohirokazu.hatenadiary.org/","width":"100%","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnishiohirokazu.hatenadiary.org%2Fentry%2F20101016%2F1287228301\" title=\"JavaScript\u3067\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u3092\u304a\u3055\u3089\u3044\u4e2d - \u897f\u5c3e\u6cf0\u548c\u306e\u306f\u3066\u306a\u30c0\u30a4\u30a2\u30ea\u30fc\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":null,"type":"rich","author_name":"nishiohirokazu","categories":[],"provider_url":"https://hatena.blog","height":"190","blog_title":"\u897f\u5c3e\u6cf0\u548c\u306e\u306f\u3066\u306a\u30c0\u30a4\u30a2\u30ea\u30fc","author_url":"https://blog.hatena.ne.jp/nishiohirokazu/","title":"JavaScript\u3067\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u3092\u304a\u3055\u3089\u3044\u4e2d","published":"2010-10-16 20:25:01"}