Nodejs Array Even even()

Method Source Code

Array.prototype.even = function(){
  return this.filter(x=> x%2 == 0?x:'');
}

Related

1. even()

   Array.prototype.even = function () {
     return this.filter(function (e) {
       return !(e % 2);
     });
   };
   

2. even()

   Array.prototype.even = function () {
     return this.filter((item) => {
       return item % 2 === 0;
     });
   };
   

3. even()

   Array.prototype.even = function(){
       let even = new Array();
       for(const e of this){
           if(!isNaN(e) && (e % 2 === 0))
               even.push(e);
       return even;
   Array.prototype.odd = function(){
   ...
   

4. even()

   Array.prototype.even = function()
     var ret = new Array();
     this.forEach(function(a) {
       if (0 == a % 2) {
         ret.push(a);
     });
     return ret;
   ...
   

5. even()

   Array.prototype.even = function(){
     var newArr = [];
     for (var i of this){
       if (i % 2 === 0){
         newArr.push(i);
     return newArr;
   

6. evens()

   Array.prototype.evens = function () {
     var a = [], o = this;
     for (var i = 0; i < o.length; i++) {
       if (i%2!=0) a.push(o[i]);
     return a;
   };