This is the README file for Class, a single inheritance OO class sytem for JavaScript, originally implemented by Bob Ippolito . Please consult the documentation for how to start creating classes in your JavaScript code. This namespace previously contained the Class system from the Prototype library, featuring a Class.create() / Class.extend() interface. This API has been moved to Bundle.Prototype. It is recommended that the new Class.subclass() implemented by this interface should be used.