Javascript(remove selected index of an array)

//remove the array selected index

        function removeA(arr) {

            var what, a = arguments, L = a.length, ax;

            while (L > 1 && arr.length) {

                what = a[--L];

                while ((ax = arr.indexOf(what)) != -1) {

                    arr.splice(ax, 1);

                }

            }

            return arr;

        }

//remove to take care of IE8 and below-

                if (!Array.prototype.indexOf) {

                    Array.prototype.indexOf = function (what, i) {

                        i = i || 0;

                        var L = this.length;

                        while (i < L) {

                            if (this[i] === what) return i;

                            ++i;

                        }

                        return -1;

                    }

                }