Nodejs Array Remove by Index removeAt( index )

Method Source Code

// add removeAt for array
Array.prototype.removeAt = function( index ){
   // 0-based index
   if(index>=0 && index<this.length){
      for(var i=index; i<this.length; i++){
         this[i] = this[i+1];//from w  w w.  java 2 s  .  c om
      }
      this.length = this.length-1;
   }
   return this;
}

function removeElement(index,array){
   if(index>=0 && index<array.length){
      for(var i=index; i<array.length; i++){
         array[i] = array[i+1];
      }
      array.length = array.length-1;
   }
   return array;
}

Related

1. remove(index)

   Array.prototype.remove=function(index){
     for(var i=0;i<this.length;i++){
       if(i==index){
         this.splice(i, 1);
         break;
   

2. remove(n)

   Array.prototype.remove = function(n) {
     this.splice(this.indexOf(n), 1);
   };
   

3. remove(n)

   Array.prototype.remove = function(n){
     for(var i in this){
       if(this[i]==n){
         this.splice(i,1);
         break;
     return this;
   

4. remove(pos)

   Array.prototype.remove = function (pos) {
       this.splice(pos, 1);
       return this;
   };
   

5. remove(pred)

   Array.prototype.remove = function(pred) {
     var removed = this.filter(function(item) {
       return pred(item)
     })
     this.forEach(function(i, index, arr) {
       if (removed.indexOf(i) !== -1) arr.splice(index, 1)
     })
     return removed
   var arr = [1, 2, 3, 4, 5, 6]
   var removed = arr.remove(function(e) {return e % 2 === 0})
   console.log(arr)
   console.log(removed)
   

6. removeAt( index )

   Array.prototype.removeAt = function( index )
     var part1 = this.slice( 0, index );
     var part2 = this.slice( index );
     part1.pop();
     return( part1.concat( part2 ) );
   

7. removeAt(index)

   Array.prototype.removeAt = function (index)
       if (this.length <= index || index < 0)
           return;
       for (var i = index + 1, n = index; i < this.length; ++i, ++n)
           this[n] = this[i];
   ...
   

8. removeAt(index)

   Array.prototype.removeAt = function(index) {
       this.splice(index, 1);
   

9. removeAt(index)

   "use strict";
   Array.prototype.removeAt = function(index) {
       this.splice(index, 1);
       return this;
   };
   Array.prototype.print = function() {
       for (var i = 0; i < this.length; i++) {
           console.log(this[i] + ", ");
   };
   Array.prototype.remove = function() {
       var what, a = arguments,
           L = a.length,
           ax;
       while (L && this.length) {
           what = a[--L];
           while ((ax = this.indexOf(what)) !== -1) {
               this.splice(ax, 1);
       return this;
   };