Example for SimpleEvent component from http://jsdo.it/zz85/75cq

SimpleEventExample.js

// generates a "event channel"
var onFire = new SimpleEvent();

// adds an listener
onFire.add(function aListener(hello, world){
  alert(hello + ' ' + world);
})

// notifies listeners
onFire.notify('Bye', 'Universe');

// unregister listener
onFire.remove(aListener);