jQuery Observer Pattern

jQueryPubSub.js

var o = $( {} );
$.subscribe = o.on.bind(o);
$.unsubscribe = o.off.bind(o);
$.publish = o.trigger.bind(o);

// Usage
document.on( 'tweetsReceived', function(tweets) {
    //perform some actions, then fire an event
    $.publish('tweetsShow', tweets);
});

//We can subscribe to this event and then fire our own event.
$.subscribe( 'tweetsShow', function() {
    //display the tweets somehow
    //
    //publish an action after they are shown.
    $.publish('tweetsDisplayed');
});

$.subscribe('tweetsDisplayed', function() {
    //
});