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#Four Ways To Do Pub/Sub With jQuery 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:

Step 1: Install bundler

# on OSX, using built-in Ruby
$ sudo gem install bundler --pre

Step 2: Create a Gemfile

# inside your app directory
$ bundle init

	Handlebars.template = function(templateString) {
	return function () {
	if (arguments.length < 1) {
	// With no arguments, return the raw template -- useful for rendering
	// partials.
	return templateString;
	} else {
	Handlebars.templates = Handlebars.templates \|\| {}
	Handlebars.templates[templateString] = Handlebars.templates[templateString] \|\| Handlebars.compile(templateString);
	return Handlebars.templates[templateString](arguments[0], arguments[1]);

	Hackintosh Build October 2011

	Component list:

	ASUS P8P67 PRO (REV 3.0) LGA 1155
	http://www.newegg.com/Product/Product.aspx?Item=N82E16813131703

	Intel Core i7-2600K
	http://www.newegg.com/Product/Product.aspx?Item=N82E16819115070


	#
	# Some helper methods
	#

	app =
	activePage: ->
	$(".ui-page-active")

	reapplyStyles: (el) ->

	@mixin link_like_button {
	border: 0;
	padding: 0;
	background: none;
	font-family: inherit;
	font-size: 1.0em;
	text-decoration: underline;
	cursor: pointer;
	}

	require "json"
	require "rake-pipeline-web-filters"

	input "assets"
	output "public"

	class HandlebarsFilter < Rake::Pipeline::Filter
	def initialize(&block)
	block \|\|= proc { \|input\| input.sub(/\.handlebars$/, '.js') }
	super(&block)

	App.collectionController = Em.ArrayProxy.create(Ember.PaginationSupport, {
	content: [],
	fullContent: App.store.findAll(App.Job),
	totalBinding: 'fullContent.length',

	didRequestRange: function(rangeStart, rangeStop) {
	var content = this.get('fullContent').slice(rangeStart, rangeStop);
	this.replace(0, this.get('length'), content);
	}
	});