Nodejs Utililty Methods Array Each

Array.prototype.each = function(f) {
  for(var i = 0; i < this.length; i++)
    f(this[i], i);
};

Array.create = function(f, count) {
    var arr = [];
    for (var i = 0; i < count; ++i) {
        arr.push(f(i));
    return arr;
Array.prototype.each = function(f) {
    for (var i = 0; i < this.length; i += 1) {
...

Array.prototype.each = function(f) {
    for (var i = 0; i < this.length; i++)f(this[i], i, this)
};

Array.prototype.each = function(f) {
  for (var i = 0; i < this.length; i++) {
    f(this[i], i);
};

Array.prototype.each = function(f) {
  for (var i = 0; i < this.length; ++i) {
    f(this[i]);
  return this;

var crypto = require('crypto')
var http = require('http');
Array.prototype.each = function(f, callback) {
    for (var i = 0, l = this.length; i < l; i++) {
        f(this[i]);
    if (callback) callback();
Array.prototype.asyncEach = function(f, callback, i) {
...

Array.prototype.each = function(f,r){
  if(r===-1){
    for(var i=this.length-1;i>=0;i--)f(this[i],i);
  }else{
    for(var i=0,l=this.length;i<l;i++)f(this[i],i);
};

Array.prototype.each = function(fn) {
    if (!fn) return false;
    for(let i = 0, len = this.length; i < len; i++) {
        if (fn(this[i], i) === false) return false;

Array.prototype.each = function(fn) {
  for (var i = 0; i < this.length; i++) fn(this[i]);

Array.prototype.each = function(fn)
  for (var i=0; i<this.length; i++)
    fn.apply(this[i], [i]);
};