//singletonvar SingletonTester = (function(){function Singleton(options){options = options || {};this.name = "SingletonTester";this.pointX = options.pointX || 6;this.pointY = options.pointY || 10;};var instance;var _static = {name : "SingletonTester",getInstance : function(options){if(instance === undefined){instance = new Singleton(options)};return instance;}};return _static;})();希望本文所述对大家的javascript程序设计有所帮助。