摘要： 最好的实现：varlangzi=window.langzi||{};langzi.singleton=window.langzi.singleton||(function(){varinstance=null;varconstructor=function(){return{id:1,name:"test",getMessage:function(){console.log("id:"+this.id+",name:"+this.name);}};};return{getInstance:function(){if(instance= 阅读全文