Nodejs Array Move move(old_index, new_index)

Method Source Code

function pad(num, size){
    var s = "0000000000000000000" + num;
    return s.substr(s.length-size);
}


Array.prototype.move = function (old_index, new_index) {
    if (new_index >= this.length) {
        var k = new_index - this.length;
        while ((k--) + 1) {
            this.push(undefined);//from  www .  j av a  2s.co m
        }
    }
    this.splice(new_index, 0, this.splice(old_index, 1)[0]);
    return this; // for testing purposes
};

Related

1. move(oldIndex,newIndex)

   Array.prototype.move = function(oldIndex,newIndex){
     return this.splice(newIndex, 0, this.splice(oldIndex, 1)[0]);
   

2. move(old_index, new_index)

   Array.prototype.move = function(old_index, new_index) {
     if (new_index >= 0 && new_index < this.length)
     this.splice(new_index, 0, this.splice(old_index, 1)[0]);
     return this;
   };
   

3. move(old_index, new_index)

   Array.prototype.move = function (old_index, new_index) {
     if (new_index >= this.length) {
       let k = new_index - this.length;
       while ((k--) + 1) {
         this.push(undefined);
     this.splice(new_index, 0, this.splice(old_index, 1)[0]);
     return this; 
   ...
   

4. move(old_index, new_index)

   Array.prototype.move = function (old_index, new_index) {
       if (new_index >= this.length) {
           var k = new_index - this.length;
           while ((k--) + 1) {
               this.push(undefined);
       this.splice(new_index, 0, this.splice(old_index, 1)[0]);
       return this; 
   ...
   

5. move(old_index, new_index)

   "use strict";
   Array.prototype.move = function (old_index, new_index) {
     if (new_index >= this.length) {
       var k = new_index - this.length;
       while (k-- + 1) {
         this.push(undefined);
     this.splice(new_index, 0, this.splice(old_index, 1)[0]);
   ...
   

6. move(old_index, new_index)

   Array.prototype.move = function (old_index, new_index) {
       if (new_index >= this.length) {
           var k = new_index - this.length;
           while ((k--) + 1) {
               this.push(undefined);
       this.splice(new_index, 0, this.splice(old_index, 1)[0]);
       return this; 
   ...
   

7. move(old_index, new_index)

   Array.prototype.move = function (old_index, new_index) {
       if (new_index >= this.length) {
           var k = new_index - this.length;
           while ((k--) + 1) {
               this.push(undefined);
       this.splice(new_index, 0, this.splice(old_index, 1)[0]);
       return this; 
   ...
   

8. move(old_index, new_index)

   "use strict";
   Array.prototype.move = function (old_index, new_index) {
       if (new_index >= this.length) {
           var k = new_index - this.length;
           while ((k--) + 1) {
               this.push(undefined);
       this.splice(new_index, 0, this.splice(old_index, 1)[0]);
   ...
   

9. move(old_index, new_index)

   Array.prototype.move = function (old_index, new_index) {
       while (old_index < 0) {
           old_index += this.length;
       while (new_index < 0) {
           new_index += this.length;
       if (new_index >= this.length) {
           var k = new_index - this.length;
   ...