/** * Created by Administrator on 2016/9/1. *///数组去重Array.prototype.unique = function(){    this.sort();    var re=[this[0]];    for(var i = 1; i < this.length; i++){        if( this[i] !== re[re.length-1]){            re.push(this[i]);        }    }    return re;}//扩展数组方法：查找指定元素的下标Array.prototype.indexOf = function(val) {    for (var i = 0; i < this.length; i++) {        if (this[i] == val) return i;    }    return -1;};//扩展数组方法:删除指定元素Array.prototype.rmove = function(val) {    var index = this.indexOf(val);    while(index>-1){        this.splice(index, 1);        index = this.indexOf(val);    }    return this;};