设计模式探究系列之Singleton(单例模式)

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var Singleton = (function(){var _SingletonClass = function(){};var _singleton = null;var _getInstance = function(){if(!_singleton){_singleton = new _SingletonClass();}return _singleton;};//add prototypevar _name = '';var _getName = function(){return _name;};var _setName = function(name){_name = name;};_SingletonClass.prototype = {getName:_getName,setName:_setName};return {getInstance:_getInstance};})();var mySingleton = Singleton.getInstance();mySingleton.setName('zhangyaochun');alert(mySingleton.getName());