js模式（一）：单例模式

js模式（一）：单例模式

function Universe(){         var instance;         Universe = function (){             return instance;         }         Universe.PRototype = this;         console.log(Universe);         instance = new Universe();         instance.constructor = Universe;         instance.start_time = 0;         instance.bng ="dd";         return instance;     }     Universe.prototype.nothint = 1;      console.log(Universe);     var a = new Universe(); console.log(Universe);     var b = new Universe();

单例模式