CoffeeScript attempts to expose the "good parts" of JavaScript in a simpler syntax. It compiles to plain JavaScript, so it is just JavaScript under the hood. CoffeeScript's core is good, as it allows exposing JavaScript's best features while abstracting away more complex or error-prone parts of the language. The syntax sugar in CoffeeScript makes JavaScript code more concise and readable.

3. "It's just
JavaScript"
coated with
syntax sugar

4. Did
CoffeeScript attempts to expose
you
those 'good parts'
notice?

5. it's quite thin #nuffsaid

6. But its core
is gooooood

7. CoffeeScript
CoffeeScript attempts to expose
exposes those
those 'good parts'
'good parts'

8. CoffeeScript attempts to expose
those 'good parts'

9. Ruby
Python
Haskell

10. # prototyping
String::downCase = -> @toLowerCase()
# functions, chained comparison
isMyAge = (age) ->
24 < age < 26
# splat arguments, pattern matching
unCapitalize = (words...) ->
(words.map ([firstChar, rest...]) -> firstChar.downCase() + rest.join '').join ''
# destructuring assignment, function binding
Me = ([surname, middlenames..., lastname] ) ->
# string interpolation
@name = "#{surname} #{lastname}"
# everything is an expression
@age = if isMyAge(x = 25) then x else '?'
@twitter = unCapitalize('@', surname, lastname)
# use jQuery (or any JavaScript library), multi line Strings
$('#welcome').bind 'click' (event) => alert "Hello,
I'm #{@name}!"
# there's no var!!
me = Me("Jeroen Matthijs Rosenberg".split ' ')

11. #nuffsaid

12. word.spread! for people in continents[..]
when people isnt aware