CoffeeScript class demo

gistfile1.coffee

class Contact
   constructor: (@name) ->
     @_type = "org.foo.contacts.Contact"

   addPhone: (phone) =>
     if not phones?
       @phones = []
     @phones.push phone

   dump: =>
     console.log JSON.stringify(this)

class Name
  constructor: (@prefix, @firstName) ->

class Phone
  constructor: (@value, @subType=`undefined`) ->

c = new Contact(new Name("Dr", "Palle"))
c.addPhone new Phone("1234")
alert JSON.stringify(c)