Event Emitter experiment (<160 characters)

gistfile1.js

// Originally, I wanted to a simple Node.js Event Emitter-style object in less than 150 characters, but it just wouldn't fit

/* 
Couple of thoughts
* The name Emitter shouldn't be changed
* `var` is missing, so it's directly bound to `window` and we're saving characters (Yeah for using a JS bad practice to our advantage)
* While `e` as the property isn't really amazing, it's just there to use as little characters as possible
* Obviously, there is no checking if the events really exist
* With ES6, method shorthands and arrow functions it would be considerably less than 150 characters

*/

// ES5 (151 characters):
Emitter={e:{},on:function(e,f){(this.e[e]=this.e[e]||[]).push(f)},off:function(e){this.e[e]=[]},emit:function(e){this.e[e].forEach(function(a){a()})}}

// ES6 (114 characters):
Emitter={e:{},on(e,f){(this.e[e]=this.e[e]||[]).push(f)},off(e){this.e[e]=[]},emit(e){this.e[e].forEach(a=>a())}}
// You can paste this directly in Firefox Developer Edition and it'll work


// Usage
Emitter.on('boom', function() {
  console.log('boom');
});

Emitter.emit('boom');