new_class_syntax.js

var Base = createBase();

// Human < Base
var Human = Base.extend(function(){
  return {
    init: function(name){
      Base.call(this, name);
      this.name = name;
      this.greeting = 'Hello';
    },
    makeNoise: function(){
      return this.greeting;
    }
  };
});

// Hippie < Human
var Hippie = Human.extend(function(){
  return {
    init: function(name){
      Human.call(this, name);
      this.greeting = 'Hey man!';
    },
    makePeace: function(){
      return 'Peace!';
    }
  };
});

// Hipster < Hippie
var Hipster = Hippie.extend(function(){
  var thought = 'Cafe latte';
  return {
    init: function(name){
      Hippie.call(this, name);
      this.greeting = 'Beer me!';
    },
    makePeace: function(){
      return 'Cold drip baby?';
    },
    setThought: function(value){
      thought = value;
    },
    getThought: function(){
      return thought;
    }
  };
});