Nodejs Array Remove by Index remove(pred)

Method Source Code

Array.prototype.remove = function(pred) {
   var removed = this.filter(function(item) {
      return pred(item)
   })//  w ww  .  j  ava2s  . c  o  m

   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)

Related

1. remove(index)

   'use strict';
   Array.prototype.remove = function (index) {
     return this.splice(index, 1);
   

2. remove(index)

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

3. remove(n)

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

4. remove(n)

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

5. remove(pos)

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

6. removeAt( index )

   Array.prototype.removeAt = function( index ){
     if(index>=0 && index<this.length){
       for(var i=index; i<this.length; i++){
         this[i] = this[i+1];
       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;
   

7. removeAt( index )

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

8. 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];
   ...
   

9. removeAt(index)

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