{"author_name":"ledsun","title":"JavaScript\u3067Sigleton\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5b9f\u88c5\u3057\u3066\u307f\u308b","provider_url":"https://hatena.blog","version":"1.0","url":"https://ledsun.hatenablog.com/entry/2013/10/22/165140","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fledsun.hatenablog.com%2Fentry%2F2013%2F10%2F22%2F165140\" title=\"JavaScript\u3067Sigleton\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5b9f\u88c5\u3057\u3066\u307f\u308b - @ledsun blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"\u3044\u308d\u3044\u308d\u306aSingleton\u3092\u5b9f\u88c5\u3057\u3066\u307f\u307e\u3059\u3002 \u95a2\u6570 var getSingleton = (function() { var instance = null, init = function() { instance = { value: Math.random() } }; return function() { if (instance == null) { init(); } return instance; }; })(); var a = getSingleton(); var b = getSingleton(); console.log(a == b); //true cons\u2026","blog_url":"https://ledsun.hatenablog.com/","image_url":null,"type":"rich","published":"2013-10-22 16:51:40","categories":["\u6280","JavaScript"],"provider_name":"Hatena Blog","blog_title":"@ledsun blog","height":"190","author_url":"https://blog.hatena.ne.jp/ledsun/"}