Javascript Array removeAll()

Array.prototype.removeAll = function () {
    while (this.length > 0) {
        this.pop();/*from w  ww . ja  v a 2 s . co  m*/
    }
};

Array.prototype.removeAll = function () {
    var what, a = arguments, L = a.length, ax;
    while (L && this.length) {
        what = a[--L];/* ww  w .  j a va  2s. c  om*/
        while ((ax = this.indexOf(what)) !== -1) {
            this.splice(ax, 1);
        }
    }
    return this;
};

function RemovingAlgorithm(arr, index)
{
    for (var i = index; i < arr.length; i++)
    {/*from  w w  w.  j  a v a2  s . c o m*/
        arr[i] = arr[i + 1];
    }
    return arr;
}

function RemoveAll(value)
{
    for (var i = 0; i < this.length; i++)
    {
        if (arr[i] == value)
        {
            RemovingAlgorithm(arr, i);
            i--;
        }
    }
    return arr;
}

Array.prototype.RemoveAll = RemoveAll;

var arr = new Array();
arr = [1, 2, 3, 4, 5, 6, 6, 7, 8, 6];

var newArr = arr.RemoveAll(6);

for (var i = 0; i < newArr.length; i++) 
{
    if (newArr[i] != undefined) 
    {
        jsConsole.write(newArr[i] + " ");
    }
}

Array.prototype.removeAll = function() {
 for( var i=this.length-1; i>=0; i-- ){
  this[i]=null;//  w  w w  . j a  v a 2  s. com
 }
 this.length=0;
};