Nodejs Array Shuffle shuffle()

Method Source Code

Array.prototype.shuffle = function(){
   var result = [];
   while(this.length > 0 ){
      result.push( this.splice(Math.floor(Math.random() * this.length), 1)[0] );
   }// ww  w.jav a  2  s .c om
   return result;
};

Related

1. shuffle()

   Array.prototype.shuffle = function () {
     for(var j, x, i = this.length; i; j = Math.floor(Math.random() * i), x = this[--i], this[i] = this[j], this[j] = x);
     return this;
   };
   

2. shuffle()

   Array.prototype.shuffle = function(){
      var new_arr = this.slice(0);
    for (var j, x, i = new_arr.length; i; j = Math.floor(Math.random() * i), x = new_arr[--i], new_arr[i] = new_arr[j], new_arr[j] = x);
      return new_arr;
   

3. shuffle()

   Array.prototype.shuffle = function() {
     var currentIndex = this.length, temporaryValue, randomIndex;
     while (0 !== currentIndex) {
       randomIndex = Math.floor(Math.random() * currentIndex);
       currentIndex -= 1;
       temporaryValue = this[currentIndex];
       this[currentIndex] = this[randomIndex];
       this[randomIndex] = temporaryValue;
   

4. shuffle()

   Array.prototype.shuffle = function() {
       if (Object.prototype.toString.call(this) !== '[object Array]') {
           throw new TypeError("`this` must be Array, not " + typeof this);
       var length = this.length;
       for (var i = length - 1; i >= 0; i--) {
           var randomIndex = Math.floor(Math.random() * length),
               temp = this[i];
           this[i] = this[randomIndex];
   ...
   

5. shuffle()

   Array.prototype.shuffle = function(){
     var length = this.length;
     var i, j, temp;
     for(i = length - 1; i >= 0; i--){
       j = Math.floor(Math.random()*(i+1));
       temp = this[i];
       this[i] = this[j];
       this[j] = temp;
     return this;
   };
   var testArray = [1,2,3,4,5,6,7,8,9,10];
   console.log(testArray.shuffle());
   console.log(testArray);
   

6. shuffle()

   Array.prototype.shuffle = function(){
     for (var i = 0; i < this.length; i++){
         var a = this[i];
         var b = Math.floor(Math.random() * this.length);
         this[i] = this[b];
         this[b] = a;
   function shuffleProperties(obj) {
   ...
   

7. shuffle()

   Array.prototype.shuffle = function () {
       let array = this, arraylength = array.length, randomIndex, temp;
       while (arraylength) {
           randomIndex = Math.floor(Math.random(arraylength) * arraylength--);
           temp = array[arraylength];
           array[arraylength] = array[randomIndex];
           array[randomIndex] = temp;
       return array;
   ...
   

8. shuffle()

   'use strict';
   Array.prototype.shuffle = function() {
     var arr = this.slice(0);
     var counter = this.length,
       temp, index;
     while (counter > 0) {
       index = Math.floor(Math.random() * counter);
       counter--;
       temp = arr[counter];
   ...
   

9. shuffle()

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