Learning CoffeeScript the Tiddler way...

Tiddler.coffee

class Tiddler
  # @ is shorthand for this.title = title
  constructor: (@title, @bag) ->

  # Other properties attached to prototype
  text: ""
  tags: []

  # toString() function returns properties
  # Fat arrow ensures 'this' inside the function is always bound to the instance
  toString: =>
    "#{@title}:#{@bag}"

  # Static function example
  @Version: ->
    "v1.0.0"

# Usage
tiddler = new Tiddler("About", "pads_public")
tiddler.text = "Hello World!"
tiddler.tags = [
  "one"
  "two"
  "three"
]

console.log "tiddler: #{tiddler.toString()}"
console.log "text: #{tiddler.text}"
console.log "tag: #{tag}" for tag in tiddler.tags

Tiddler.js

// Generated by CoffeeScript 1.6.3
(function() {
  var Tiddler, tag, tiddler, _i, _len, _ref,
    __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };

  Tiddler = (function() {
    function Tiddler(title, bag) {
      this.title = title;
      this.bag = bag;
      this.toString = __bind(this.toString, this);
    }

    Tiddler.prototype.text = "";

    Tiddler.prototype.tags = [];

    Tiddler.prototype.toString = function() {
      return "" + this.title + ":" + this.bag;
    };

    Tiddler.Version = function() {
      return "v1.0.0";
    };

    return Tiddler;

  })();

  tiddler = new Tiddler("About", "pads_public");

  tiddler.text = "Hello World!";

  tiddler.tags = ["one", "two", "three"];

  console.log("tiddler: " + (tiddler.toString()));

  console.log("text: " + tiddler.text);

  _ref = tiddler.tags;
  for (_i = 0, _len = _ref.length; _i < _len; _i++) {
    tag = _ref[_i];
    console.log("tag: " + tag);
  }

}).call(this);

/*
//@ sourceMappingURL=Tiddler.map
*/