Nodejs Utililty Methods Array Even

Array.prototype.even = function(){
    return this.filter((v,i)=> { return v%2==0 })
Array.prototype.odd = function(){
    return this.filter((v,i)=> { return v%2!=0 })
console.log([1,2,3,6,5].even()); 
console.log([1,2,3,6,5,3,4,7].odd()); 

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

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

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

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

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

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(){
...

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

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

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