I've been asked to port some of our PHP code across to JavaScript, so that more of our logic runs client-side. What'd I'd like is a simple example that shows:

• a namespace (Package) containing two classes (Master and Slave)


• the Master class has a property p, a function m and a constructor that takes a single argument to set the initial value of p


• the Slave class inherits both p, the constructor and m from the Master class

I don't mind using some sort of existing framework, but it must be lightweight -- ideally no more than 200 LOC (un-minified).

Here's my attempt, FWIW:

var Package = {};



Package.Master = function(pValue) {

    this.p = pValue;

    this.m = function() {

        alert(mmmmm);

    }

}



Package.Slave = function(pValue) {

    // this will inherit from Package.Master

}



// one of the many online examples:

// http://kevlindev.com/tutorials/javascript/inheritance/index.htm

KevLinDev.extend = function(subClass, baseClass) {

   function inheritance() {}

   inheritance.prototype = baseClass.prototype;



   subClass.prototype = new inheritance();

   subClass.prototype.constructor = subClass;

   subClass.baseConstructor = baseClass;

   subClass.superClass = baseClass.prototype;

}



KevLinDev.extend(Package.Slave, Package.Master);