Simple bind/trigger mixin for javascript object

events_dispatcher.coffee

# this: https://gist.github.com/464257 in coffeescript, without the global stuff...
class EventsDispatcher
  callbacks: {}

  bind: (event_name, callback) ->
    @callbacks[event_name] ||= []
    @callbacks[event_name].push callback
    @

  trigger: (event_name, data) ->
    @dispatch event_name, data
    @

  dispatch: (event_name, data) ->
    chain = @callbacks[event_name]
    callback data for callback in chain if chain?

example.coffee

class Connection extends EventsDispatcher
  connect: ->
   @trigger 'connected'


something = new Connection()

something.bind 'connected', ->
  console.log 'i connected!'

something.connect()