<script type="text/javascript">

    //删除元素值

    Array.prototype.remove = function(element){

        for (var i = 0,j=0; i < this.length; i++) {

            if(this[i]!=element){

                this[j++]=this[i];

            }

        }

        this.length-=1

    }

    //删除元素下标

    Array.prototype.removeIndex=function(dx)

    {

        if(isNaN(dx)||dx>this.length)

        {

            alert("删除对象下标越界");

            return false;

        }

        for(var k=0,n=0;k<this.length;k++)

        {

            if(this[k]!=this[dx])

            {

                this[n++]=this[k];

            }

        }

        this.length-=1

    } 

    var arr =["Iphone","MI","SAMSUNG","VIVO","OPPO","HUAWEI","ZTE","SONY","Coolpad","GiONEE","MEIZU","nubia","Letv","TCL"];

    arr.push("NOKIA");

    arr.remove("Iphone");
    arr.removeIndex(1);

    alert(arr.join(","));

</script>