js中[]没有remove方法,但是可以自定义方法

 

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 = [1,2,3,4,5,6,88];

a.remove(88);