PubSub

Pure Javascript implementation of a Publish/Subscribe pattern

How it works

You get the code into your page. That part is up to you. There's a stand alone script or a CurlJS module.

PubSub.subscribe("UI.ACTIVATE",  function(){
	//do some kind of activation
});

This is handy if you want to load a bunch of files and then activate the UI when its done loading. When you're ready for that action to happen simply call publish

PubSub.publish("UI.ACTIVATE", { optional_object: "Can send data to the subscription" });

Since I sent data to the UI.ACTIVATE subscription you might want to log out that data

PubSub.subscribe("UI.ACTIVATE",  function(e){
	//do some kind of activation
	console.log(e.data.optional_object);
});

If you investigate that event object you'll see that each event has an event, id, and data properties. These can be used to modify subscription.

PubSub.subscribe("UI.ACTIVATE",  function(e){
	//Unsubscribe after first activation
	PubSub.unsubscribe(e.id);
});

Subscriptions can respond to wild cards too

PubSub.subscribe("UI.*",  function(e){
	//good for tracking events in Google Analytics
	_gaq.push(['_trackEvent', 'UI', e.event]);
});