Nodejs Array Move move(old_index, new_index)

Method Source Code

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);/*from  www  .j  ava  2 s .c o m*/
      }
   }
   this.splice(new_index, 0, this.splice(old_index, 1)[0]);
   return this; // for testing purposes
};

Related

1. move(from, to)

   Array.prototype.move = function (from, to) {
     this.splice(to, 0, this.splice(from, 1)[0]);
   };
   

2. move(from, to)

   Array.prototype.move = function(from, to) {
     if (from >= this.length) return 'no target'
     var a = this.concat()
     var e = a.splice(from, 1)[0]
     if (to > a.length) {
       a[to] = e
     } else {
       a.splice(to, 0, e)
     return a
   var ArrayTest = ['a', 'b', 'e']
   console.log("the origin array below")
   console.log(ArrayTest.toString())
   var newArr = ArrayTest.move(0, 2)
   console.log((newArr).toString() + "\nWE DID ITTT :D")
   

3. 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;
   };
   

4. move(oldIndex,newIndex)

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

5. 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;
   };
   

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)

   "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]);
   ...
   

8. 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);
   ...
   

9. 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; 
   ...