Nodejs Array Get Random getRandomItems(count)

Method Source Code

"use strict";/*from   w  w w.  j  a v  a  2s.c om*/


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);
}

Related

1. getRandom()

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

2. getRandomArrayItem()

   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)];
   

3. 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);
   

4. getRandomIndex()

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

5. getRandomItem()

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

6. getRandomValue()

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