{"description":"prototype\u306b\u5bfe\u3059\u308b\u7406\u89e3\u3092\u6df1\u3081\u308b\u305f\u3081\u306b\u5c11\u3057\u8003\u3048\u3066\u307f\u305f var obj = {}; var func = function(){}; alert(obj.prototype); //undefined\u3068\u51fa\u529b alert(func.prototype); //[object Object]\u3068\u51fa\u529b \u307e\u305aprototype\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u51fa\u529b\u3057\u3066\u307f\u308b\u3002obj(\u666e\u901a\u306eObject)\u306e\u5834\u5408\u3001undefined\u3068\u51fa\u529b\u3055\u308c\u308b\u3002\u3064\u307e\u308aprototype\u3068\u3044\u3046\u30d7\u30ed\u30d1\u30c6\u30a3\u81ea\u4f53\u3082\u3063\u3066\u3044\u306a\u3044\u3002\u3053\u308c\u306b\u5bfe\u3057\u3066func(\u666e\u901a\u306efunction)\u306e\u5834\u5408\u3001prototype\u306fObject\u306b\u306a\u308b\u3002\u3053\u3053\u3067\u3001prototype\u306b\u6307\u5b9a\u2026","width":"100%","blog_title":"\u72ac\u3082\u6b69\u3051\u3070\u68d2\u3082\u6b69\u304f","version":"1.0","blog_url":"https://prime503.hatenadiary.org/","author_url":"https://blog.hatena.ne.jp/prime503/","type":"rich","provider_name":"Hatena Blog","categories":["JavaScript"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fprime503.hatenadiary.org%2Fentry%2F20100122%2F1264154141\" title=\"JavaScript\u306eprototype\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u5bfe\u3059\u308b\u7406\u89e3 - \u72ac\u3082\u6b69\u3051\u3070\u68d2\u3082\u6b69\u304f\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","published":"2010-01-22 18:55:41","image_url":null,"url":"https://prime503.hatenadiary.org/entry/20100122/1264154141","height":"190","author_name":"prime503","title":"JavaScript\u306eprototype\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u5bfe\u3059\u308b\u7406\u89e3"}