Generate GUID-like GUIDs w/ CoffeeScript - adapted from http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript

guid.coffee

class GUID

  s4: ->
    Math.floor((1 + Math.random()) * 0x10000).toString(16).substring(1)

  create: () ->
    "#{@s4()}#{@s4()}-#{@s4()}-#{@s4()}-#{@s4()}-#{@s4()}#{@s4()}#{@s4()}"

guid = new GUID
console.log guid.create()