pseudo-classical-pattern

gistfile1.js

function extend(Child, Parent) {
  Child.prototype = (function () { function F() {};  F.prototype = Parent.prototype; return new F; })();
  Child.prototype.constructor = Child;
  Child.parent = Parent.prototype;
  return Child.prototype;
};

//namespace
var world = {species:{animals:{}}};


//Animal pseudo-class
world.species.Animal = (function(){

    //private
    var p, running = false;

    //constructor
    var Animal = function(name){
        this.name = name;
    };

    p = extend(Animal, Object);

    p.run = function(value){
        running = value;
        console.log('%s is%s running!', this.name, running ? '' : 'n\'t');
    };

    p.toString = function(){
        return this.name;
    };

    return Animal;

})();


//Dog pseudo-class
world.species.animals.Dog = (function(){

    var p;

    var Dog = function(name){
        //pseudo-super()
        Dog.parent.constructor.apply(this, arguments);
    };

    p = extend(Dog, world.species.Animal);

    p.sleep = function(){
        this.run(false);
        console.log('%s is sleeping.', this.name);
    };

    return Dog;

})();


//new instance
var s = new world.species.animals.Dog('Max');
s.run(true);
s.sleep();

//output:
/**
Max is running!
Max isn't running!
Max is sleeping.
*/