Simple module pattern versatility

gistfile1.js

(function(exports, $, otherLibrariesYouNeed) {

  var localVariable = 'This is bound in the closure, so I will not create accidental globals.';

  function PrivateFunction() {

  }

  function MyConstructor() {
    this.property = 'something';
  }

  MyContructor.prototype = {
    method1: function() { /* can use PrivateFunction() */ },
    method2: function() { /* ... */ }
  };

  // Now you can either export a singleton:
  exports.mySingleton = new MyConstructor();

  // Or you can export a constructor (kind of like a Class)
  exports.MyConstructor = MyConstructor;

})(window, jQuery, otherStuff);