Nodejs Array Remove remove(elem)

Method Source Code

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

/**
 * ### Problem 2. Remove elements
 *   Write a function that removes all elements with a given value.
 *   Attach it to the array type.
 *   Read about **prototype** and how to attach methods.

 var arr = [1,2,1,4,1,3,4,1,111,3,2,1,'1'];
 arr.remove(1); //arr = [2,4,3,4,111,3,2,'1'];
 */

Array.prototype.remove = function(elem) {
    var i = 0;
    while(i < this.length){
        if(this[i] === elem){
            this.splice(i, 1);
        }
        i+=1;
    }
};

var arr = [1,2,1,4,1,3,4,1,111,3,2,1,'1'];
console.log("Initial array:");
console.log(arr);
arr.remove(1); //arr = [2,4,3,4,111,3,2,'1'];
console.log("After removing all 1:" );
console.log(arr);

Related

1. remove(el, test)

   Array.prototype.remove = function(el, test) {
       if (test == null) {
           var pos = this.indexOf(el);
           if (pos >= 0) this.splice(pos, 1);
       } else {
           for (var i = this.length; --i >= 0;) {
               if (test(this[i], el)) this.splice(i, 1);
       return this;
   };
   

2. remove(elem)

   Array.prototype.remove = function(elem) {
       var match = -1;
       while( (match = this.indexOf(elem)) > -1 ) {
           this.splice(match, 1);
   };
   

3. remove(elem)

   Array.prototype.remove = function(elem) {
       var removed = false;
       var match = -1;
       while( (match = this.indexOf(elem)) > -1 ) {
           this.splice(match, 1);
           removed = true;
       return removed;
   };
   ...
   

4. remove(elem)

   Array.prototype.remove = function(elem) {
     let index = this.indexOf(elem);
     if (index < 0) {
       return;
     this.splice(index, 1);
   

5. remove(elem)

   Array.prototype.remove = function(elem) {
       return this.filter(function(e) {
           return !(e === elem)
       });
   

6. remove(elem)

   Array.prototype.remove = function(elem) { 
       var index = this.indexOf(elem);
       if (index > -1) {
           this.splice(index, 1);
   };
   

7. remove(element)

   Array.prototype.remove = function(element)
     var index = this.indexOf(element);
     if (index != -1)
       this.splice(index, 1);
   

8. remove(element)

   Array.prototype.remove = function(element){
     var i = 0;
     var len = this.length;
     for(i = len - 1; i >= 0; i--){
       if(this[i] === element){
         this.splice(i,1);
   

9. remove(element)

   Array.prototype.remove = function(element) {
     var index = this.indexOf(element);
     if (index > -1) {
       this.splice(index, 1);
     return this;
   };