Person.coffee

class Person
  
  constructor: (@name) ->
  
  goodGreet: =>
    "Hello, my name is #{@name}"
  
  badGreet: ->
    "I'm #{@name} and this won't work!"



pewpewpew = (callback) ->
  console.log callback()

person = new Person('Slartibartfast')

pewpewpew person.goodGreet() # @name blir "Slartibartfast"
pewpewpew person.badGreet() # @name blir "result"

Person.js

var Person, person, pewpewpew,
  __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };

Person = (function() {
  function Person(name) {
    this.name = name;
    this.goodGreet = __bind(this.goodGreet, this);
  }

  Person.prototype.goodGreet = function() {
    return "Hello, my name is " + this.name;
  };

  Person.prototype.badGreet = function() {
    return "I'm " + this.name + " and this won't work!";
  };

  return Person;

})();

pewpewpew = function(callback) {
  return console.log(callback());
};

person = new Person('Slartibartfast');

pewpewpew(person.goodGreet());

pewpewpew(person.badGreet());