code: 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;
  }
docs: to remove passed values from the array, used to find and remove empty vlaues