Proto.js

A minimal utility for creating objects with an inheritance chain

var Car = Proto.create({
	maxSpeed:100,
	admire:function(){
		return 'Nice Car!';
	},
	getSpecs:function(){
		return "Max speed is " + this.maxSpeed;
	}
});

var ferrari = Car.create({
	maxSpeed:250,
	admire:function(){
		return 'Wow, ' + this.parent.admire();
	}
});

ferrari.getSpecs();
//Max speed is 250;

ferrari.admire();
// Wow, Nice Car!