js 删除数据制定元素

Array.prototype.indexOf = function(val) {    for (var i = 0; i < this.length; i++) {        if (this[i] == val) return i;    }    return -1;};Array.prototype.remove = function(val) {    var index = this.indexOf(val);    if (index > -1) {        this.splice(index, 1);    }};

var a=[1,2,3,5];firstMax = Math.max.apply(Math, a);//最大值a.remove(firstMax);console.log(a);