ledsun https://blog.hatena.ne.jp/ledsun/ @ledsun blog https://ledsun.hatenablog.com/ 技 JavaScript いろいろなSingletonを実装してみます。 関数 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… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fledsun.hatenablog.com%2Fentry%2F2013%2F10%2F22%2F165140" title="JavaScriptでSigletonオブジェクトを実装してみる - @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> Hatena Blog https://hatena.blog 2013-10-22 16:51:40 rich https://ledsun.hatenablog.com/entry/2013/10/22/165140 1.0 100%