js 删除数组下标

Array.prototype.remove=function(obj){  
    for(var i =0;i <this.length;i++){  
        var temp = this[i];  
        if(!isNaN(obj)){  
            temp=i;  
        }  
        if(temp == obj){  
            for(var j = i;j <this.length;j++){  
                this[j]=this[j+1];  
            }  
            this.length = this.length-1;  
        }     
    }  
}

使用方法

var arr =new Array();
arr[0]="dddddd";
arr[1]="dxxxxxxx";
arr[2]="vvvvvvv";
arr[3]="dbbbbb";

var str ="vvvvvvv";

arr.remove(3);//删除下标为3的对象
arr.remove(str);//删除对象值为“vvvvvvv”