Nodejs Utililty Methods Array Random

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

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

Array.prototype.randomRemove = function () {
  return this.splice(Math.floor(Math.random() * this.length), 1)[0];

'use strict';
Array.prototype.random_item = function () {
    return this[Math.floor(Math.random() * this.length)];
};
var printError = function (msg) {
    var newline = document.createElement('br');
    var content = document.createTextNode(msg);
    var messages = document.getElementById('messages');
    messages.appendChild(content);
...

Array.prototype.randomise = function() {
    return this.sort(function() { return 0.5 - Math.random() });

Array.prototype.randomize = function() {
  var result = [];
  while (this.length) {
    var index = this.indexOf(this.random());
    result.push(this.splice(index, 1)[0]);
  return result;

Array.prototype.randomize = Array.prototype.randomize || function() {
  var result = [];
  var clone = this.slice();
  while (clone.length) {
    var index = clone.indexOf(clone.random());
    result.push(clone.splice(index, 1)[0]);
  return result;

Array.prototype.randomize = function() {
    if (this.length < 2) {
        return this;
    var items = Array.from(this);
    var newArr = [];
    while (items.length > 0) {
        var entry = items.random();
        newArr.push(entry);
...

function range(from, to) {
  var result = []
  for(var i = from; i <= to; i++) {
    result.push(i)
  return result
Array.prototype.randomize = function() {
  this.sort(function(){ return (Math.round(Math.random()) - 0.5) })
...

Array.prototype.randomize = function(){
  var size = this.length;
  var itensInArray = 0;
  var newArray = [];
  var emptyObject = {}; 
  this.forEach(function(){ newArray.push(emptyObject); }); 
  this.forEach(function(item){
    var index = Math.randomInt(0, size - 1);
    while(newArray[index] != emptyObject) {
...