Nodejs Utililty Methods Array Move

function pad(num, size){
    var s = "0000000000000000000" + num;
    return s.substr(s.length-size);
Array.prototype.move = function (old_index, new_index) {
    if (new_index >= this.length) {
        var k = new_index - this.length;
        while ((k--) + 1) {
            this.push(undefined);
...

Array.prototype.move = function (old_index, new_index) {
    if (new_index >= this.length) {
        var k = new_index - this.length;
        while ((k--) + 1) {
            this.push(undefined);
    this.splice(new_index, 0, this.splice(old_index, 1)[0]);
    return this; 
...

Array.prototype.move = function (old_index, new_index) {
    if (new_index >= this.length) {
        var k = new_index - this.length;
        while ((k--) + 1) {
            this.push(undefined);
    this.splice(new_index, 0, this.splice(old_index, 1)[0]);
    return this; 
...

"use strict";
Array.prototype.move = function (old_index, new_index) {
    if (new_index >= this.length) {
        var k = new_index - this.length;
        while ((k--) + 1) {
            this.push(undefined);
    this.splice(new_index, 0, this.splice(old_index, 1)[0]);
...

Array.prototype.move = function (old_index, new_index) {
    while (old_index < 0) {
        old_index += this.length;
    while (new_index < 0) {
        new_index += this.length;
    if (new_index >= this.length) {
        var k = new_index - this.length;
...

function randomNumberBetween(x, y) {
    return (Math.random() * (y - x)) + x;
$.fn.exists = function(callback) {
  var args = [].slice.call(arguments, 1);
  if (this.length) {
    callback.call(this, args);
  return this;
...

Array.prototype.move = function (old_index, new_index) {
  if (new_index >= this.length) {
    var k = new_index - this.length;
    while ((k--) + 1) {
      this.push(undefined);
  this.splice(new_index, 0, this.splice(old_index, 1)[0]);
  return this;
...

Array.prototype.move = function (old_index, new_index) {
    while (old_index < 0) {
        old_index += this.length;
    while (new_index < 0) {
        new_index += this.length;
    if (new_index >= this.length) {
        var k = new_index - this.length;
...

Array.prototype.move = function(pos1, pos2) {
  var i, tmp, _ref, _ref2;
  tmp = this[pos1];
  if (pos1 < pos2) {
    for (i = pos1, _ref = pos2 - 1; pos1 <= _ref ? i <= _ref : i >= _ref; pos1 <= _ref ? i++ : i--) {
      this[i] = this[i + 1];
  } else {
    for (i = pos1, _ref2 = pos2 + 1; pos1 <= _ref2 ? i <= _ref2 : i >= _ref2; pos1 <= _ref2 ? i++ : i--) {
...