Nodejs Array Get Random getRandomArrayItem()

Method Source Code

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];//from   w w  w  .j  a v  a 2 s.  c  om
    array[j] = temp;
  }
  return array;
}

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

Related

1. getRand()

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

2. getRandom()

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

3. getRandom()

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

4. getRandomElement()

   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);
   

5. getRandomIndex()

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

6. getRandomItem()

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

7. getRandomItems(count)

   "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);