Introduction to CoffeeScript

ArraysAndObjects.coffee

myObject =
  foo: 'bar'
  isThisAwesome: true
  requiresLessKeystrokes: true
  complex:
    ifYouAreInterestedIn: true
    stillReadable: true
    caption: 'CoffeeScript'
  compilesTo: 'JavaScript'
  cost: 0
  
myArray = ['New York', 'Rio', 'Tokio']

Classes.coffee

class SharePointRepository
  constructor: (@listTitle)->
    
  getInfo:()=>
    console.log "Repository for #{@listTitle}"
  

class DocLibRepository extends SharePointRepository
  constructor: (listTitle) ->
    super listTitle
    @isDocumentLibrary = true
  
  getInfo: ()=>
    console.log "Repository for doc lib #{@listTitle}"

myRepository = new SharePointRepository 'Tasks'
myRepository.getInfo()

myDocLibRepository = new DocLibRepository 'Documents'
myDocLibRepository.getInfo()
console.log myDocLibRepository.isDocumentLibrary

comparisons.coffee

player = 
  isMuted: true
  isPlaying: false
  currentSong:
    title: 'Five Fists'
    artist: 'Hardcut'
    duration: 3.15
  
if player.isMuted is off and player.isPlaying is on
  console.log "Playing music very loud"

if not player.currentSong?
  console.log "No song loaded"
  
unless player.isPlaying is off
  console.log "music runs"

playNextSong() unless player.isPlaying is off

CSOM.coffee

ctx = SP.ClientContext.get_current
docLib = ctx.get_web().get_lists().getByTitle 'Shared Documents'
ctx.load docLib, 'Include(Title,Description)'
ctx.executeQueryAsync ()=>
  console.log "Library #{docLib.get_title()} with description #{docLib.get_description()} loaded"
, (sender, args)=>
  console.log "Error while loading doc lib #{args.get_message()}"

Iterations.coffee

numbers = [1,2,3,4,5,6,7,8,9]

prettyPrint = (n) ->
  console.log "Processed number #{n}"
  
prettyPrint n for n in numbers