Nodejs Utililty Methods Array Get Random

Array.prototype.getRand = function () {
    var rand = Math.floor(Math.random() * (this.length - 0)) + 0;
    return this[rand];

Array.prototype.getRandom = function() {
  return this[Math.random()*this.length|0];

Array.prototype.getRandom = function(){
  var result = this[Math.floor(Math.random()*this.length)];
  return result;

function shuffleArray(array) {
  for (var i = array.length - 1; i > 0; i--) {
    var j = Math.floor(Math.random() * (i + 1));
    var temp = array[i];
    array[i] = array[j];
    array[j] = temp;
  return array;
Array.prototype.getRandomArrayItem = function() {
  return this[Math.floor(Math.random()*this.length)];

Array.prototype.getRandomElement = function() {
  var i = getRandBetween(0, this.length-1);
  return this[i];
function getRandBetween(lo, hi) {
  return parseInt(Math.floor(Math.random()*(hi-lo+1))+lo);

Array.prototype.getRandomIndex = function(){
    return Math.floor(Math.random()*this.length);

Array.prototype.getRandomItem = function(){
    var index = Math.floor(Math.random() * this.length);
    return this[index];
};

"use strict";
Array.prototype.getRandomItems = function(count) {
  var items = [];
  for (var i = 0; i < count; i++) {
    if (this.length >= 1) {
      items.push(this[NLib.math.randomize(0, this.length - 1)]);
    } else {
      items.push(this[0]);
  return items;
};
Array.prototype.getRandomItem = function() {
  return this.getRandomItems(1);

Array.prototype.getRandomValue = function(){
    return this[Math.floor(Math.random()*this.length)];