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00function MyArray(){};//创建模拟数组功能的构造函数 MyArray.prototype.length=0;//解决IE下使用扩展子类 数组length的bug (function(){ var methods=['push','pop','shift','unshift','slice','splice','join']; for(var i=0;i<methods.length;i++){ (function(name){ MyArray.prototype[name]=function(){ return Array.prototype[name].apply(this,arguments); }; })(methods[i]);//根据传进来的methods值 来继承Array } })(); var mine=new MyArray(); mine.push(1,2,3,4); console.log(mine.length);1吧主为什么木有吧规....0这个吧图好多啊...0早安0...每天水一发~0水水~~~0..没人水一发~0如题... 会不会沉啊....0......这个吧是干什么的???01111