Nodejs Array Convert toForty()

Method Source Code

Array.prototype.toForty = function(){
    var start = 2;
    var end = 40;

    for(var i = start; i <= end; i += 2){
        this.push(i);// ww  w .  ja v  a 2s  .co  m
    }
   return this;
}

var oneToForty = [].toForty();


console.log(oneToForty);

Related

1. toCommaSeparatedString()

   Array.prototype.toCommaSeparatedString = function() {
     if (this.length > 0) {
       if (this.length == 1) {
         return "" + this[0];
       } else {
         var buf = new StringBuilder();
         for ( var i = 0; i < this.length; i++) {
           if (i > 0) {
             buf.append(",");
   ...
   

2. toDictionary(key)

   Array.prototype.toDictionary = function(key) {
     if (!key)
       key = function(x) { return x.id; };
     var dictionary = {};
     this.forEach(function(item) {
       var currentKey = key(item);
       if (!currentKey)
         return true;
       if (!dictionary[currentKey])
   ...
   

3. toDictionary(keySelector, valueSelector)

   Array.prototype.toDictionary = function (keySelector, valueSelector) {
     var o = {};
     var l = this.length;
     while (l-- > 0) {
       var key = keySelector(this[l]);
       if (key == null || key == "") continue;
       o[key] = valueSelector(this[l]);
     return o;
   ...
   

4. toFormat(spec)

   Array.prototype.toFormat = function (spec) {
     var buffer = [];
     for (var i = 0, len = this.length; i < len; i++) {
       buffer[i] = Jitsi.format(spec, this[i]);
     return buffer.join('');
   };
   

5. toForty()

   Array.prototype.toForty = function () {
     for (var i = 1; i < 41; i++) {
       this.push(i);
     return this;
   },
   

6. toForty()

   Array.prototype.toForty  = function() {
     return Array.range(40, 2);
   };
   

7. toForty()

   Array.prototype.toForty = function(){
     b = [];
     for(i=2; i<=40; i+=2){
       b.push(i);
     return b
   

8. toForty()

   Array.prototype.toForty = function() {
     'use strict';
     var arr = [];
     for (var i = 2; i <= 40; i += 2) {
       arr.push(i);
     return arr;
   };
   

9. toHash()

   Array.prototype.toHash = function(){
     var map = {}
     for(var i = 0;i < this.length; i++)
       map[this[i]] = ''
     return map
   };