Nodejs Array Move move(old_index, new_index)

Method Source Code

"use strict";/*from  w w w .j  av a  2s  .c  o m*/

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; // for testing purposes
};

Related

1. move(oldIndex, newIndex)

   Array.prototype.move = function(oldIndex, newIndex) {
     if (isNaN(newIndex) || isNaN(oldIndex) || oldIndex < 0 || oldIndex >= this.length) {
       return;
     if (newIndex < 0) {
       newIndex = this.length - 1;
     } else if (newIndex >= this.length) {
       newIndex = 0;
     this.splice(newIndex, 0, this.splice(oldIndex, 1)[0]);
     return newIndex;
   };
   

2. move(oldIndex,newIndex)

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

3. 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;
   };
   

4. 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; 
   ...
   

5. 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; 
   ...
   

6. move(old_index, new_index)

   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);
   ...
   

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)

   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; 
   ...
   

9. 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]);
   ...