joedotjs

var spyOn = require('./spy');
var assert = require('assert');

describe('spyOn', function () {

    it('should be a function', function () {
        assert(typeof spyOn === 'function', 'spyOn is not a function.');
    });

    describe('functionality', function () {

joedotjs

arguments keyword

http://www.codewars.com/kata/unpacking-arguments

http://www.codewars.com/kata/for-the-sake-of-argument

http://www.codewars.com/kata/duplicate-arguments

http://www.codewars.com/kata/basic-js-calculating-averages

joedotjs

Open projects looking for partners (Idea - Person)

joedotjs

var Promise = require('bluebird');

var pipeline = function (tasksThatReturnPromises, prevValue) {

    var first = tasksThatReturnPromises.shift();

    return Promise.resolve(first(prevValue)).then(function (v) {
        if (tasksThatReturnPromises.length === 0) {
            return v;
        } else {

joedotjs

// Running on your computer.

var express = require('express');
var http = require('http');
var fs = require('fs');
var server = http.createServer();
var app = express();

server.on('request', app);

joedotjs

Javascript

Javascript: The Good Parts -- Beginner/Intermediate

http://www.amazon.com/JavaScript-Good-Parts-Douglas-Crockford/dp/0596517742

Legendary book, a must-read for any Javascript programmer at least once. Goes into the basics of Javascript with the assumption that the reader is an experienced programmer already, coming from another language or already understands a fair bit about Javascript itself. Very good review of basics and more advanced concepts (like scope/closure, functions as first class objects, etc).

Javascript Design Patterns (Stoyan Stefanov) -- Intermediate

joedotjs

Promise.promisify = function (fnThatTakesCallbacks) {

  return function () {
  
    var args = [].slice.call(arguments);
   
    return new Promise(function (resolve, reject) {
     
      fnThatTakesCallbacks.apply(this, args.concat(function (err) {