Class-less JS post

closure-encapsulates-object-state.js

function createDuck( name ){
  var duck = {
    fullName: function(){ name + " duck"; }
  };
  return duck;
};

currying-and-constructor-functions.js

function createLogger( category ){
  // some implementation here
};

function createDuck( name, logger ){
    return {
      speak: function(){
        logger( name + ' was asked to speak' );
        return 'quack';
      }
    };
};

(function boot(){
  var duckLogger = createLogger('duck');

  function curriedCreateDuck(name){
    return createDuck( name, duckLogger );
  }
  globals.createDuck = curriedCreateDuck;
}());

extending-with-mixins.js

var shouter = {
  shout: function(){ return this.speak().toUpperCase(); }
};

function createShoutyDuck( name ){
  return _.extend( createDuck(name), shouter );
};