标签：on() ons his new pre sha obj instance let
var singleton = (function(){
var instance;
return function () {
if (instance) return instance;
instance = this;
return instance;
}
}());
var obj = new singleton();
var obj2 = new singleton();
console.log(obj2 === obj); // true
标签：on() ons his new pre sha obj instance let
原文地址：http://www.cnblogs.com/ax-null/p/6789316.html
