zhuochun

/* ========================================
* <Project> - <Description>
*
* Author:
* Last Edit:
* ========================================
* <License>
* ======================================== */

// the semi-colon before function invocation is a safety net against concatenated

zhuochun

/* ========================================
* <Project> - <Description>
*
* Author:
* Last Edit:
* ========================================
* <License>
* ======================================== */

define(function(require, exports) {

zhuochun

/*

  -> http://underscorejs.org/#extend

  extend(destination, *sources)

  Copy all of the properties in the source objects over to the destination object, and return the destination object.
  It's in-order, so the last source will override properties of the same name in previous arguments. 

 */

zhuochun

+1 === 1;
+0 === 0;

+undefined == NaN;
+null === 0;

+({1:2,2:3}).length == NaN

// Underscore -> https://github.com/documentcloud/underscore/blob/master/underscore.js#L80

zhuochun

#Four Ways To Do Pub/Sub With jQuery 1.7 and jQuery UI (in the future)

Between jQuery 1.7 and some of work going into future versions of jQuery UI, there are a ton of hot new ways for you to get your publish/subscribe on. Here are just four of them, three of which are new.

(PS: If you're unfamiliar with pub/sub, read the guide to it that Julian Aubourg and I wrote here http://msdn.microsoft.com/en-us/scriptjunkie/hh201955.aspx)

##Option 1: Using jQuery 1.7's $.Callbacks() feature:

$.Callbacks are a multi-purpose callbacks list object which can be used as a base layer to build new functionality including simple publish/subscribe systems. We haven't yet released the API documentation for this feature just yet, but for more information on it (including lots of examples), see my post on $.Callbacks() here:

zhuochun

//Wait for relevant code bits to load before starting any tests
define(['core.js'], function( core ) {
    module("Core Tests");
  
    test("Test core methods", function(){
        expect(2);
         
        equals( 1, 1, "A trivial test");
        ok( true, "Another trivial test");
    });

zhuochun

// http://kaijaeger.com/articles/the-singleton-design-pattern-in-javascript.html

var Singleton = (function() {
    var instance = null;

    function PrivateConstructor() {
        var rand = Math.round(Math.random() * 100);
        this.getRand = function() {
            return rand;
        } 

zhuochun

(function () {
	// ... all vars and functions are in this scope only
	// still maintains access to all globals
}());

zhuochun

  var user = {
    validateCredentials: function (username, password) {
      return (
          (!(username += '') || username === '') ? { error: "No Username Given.", field: 'name' }
        : (!(username += '') || password === '') ? { error: "No Password Given.", field: 'pass' }
        : (username.length < 3)                  ? { error: "Username is less than 3 Characters.", field: 'name' }
        : (password.length < 4)                  ? { error: "Password is less than 4 Characters.", field: 'pass' }
        : (!/^([a-z0-9_-]+)$/i.test(username))   ? { error: "Username contains invalid characters.", field: 'name' }
        : false
      );

zhuochun

//CommonJS style
var mod = require('browser.ti.module');
mod.sayHello('Kevin');