Which JavaScript Library Has the Most Comprehensive Class Inheritance Support? [closed]

Answer 1

Just pick whichever one "tastes" best to you. In the end, they all use prototypal inheritance behind the scenes, so they all have roughly the same level of functionality.

If you want a high-powered traditional class system, use GWT and program in pure Java.

Personally I prefer Ext's component system, but that's because Ext components actually have a full lifecycle (initialization, rendering, state persistence and destruction), which in turn allows component plugins that don't break with minor updates to the library.

Answer 2

I found out there is a Javascript Framework modeled after Ruby:

Js.Class

Another good one is:

Joose-js (modeled after moose (perl) )

I prefer Josse, because it seems to be more actively developed, and the syntax looks neat too!

Any thoughts??? (Maybe this should be another question??)

Answer 3

I think Microsoft Ajax implements it just perfectly (with namespaces, inheritance & interfaces etc.)

Sample:

Type.registerNamespace("Demo");

Demo.Person = function(firstName, lastName, emailAddress) {
    this._firstName = firstName;
    this._lastName = lastName;
    this._emailAddress = emailAddress;
}

Demo.Person.prototype = {

    getFirstName: function() {
        return this._firstName;
    },

    getLastName: function() {
        return this._lastName;
    },

    getName: function() {
        return this._firstName + ' ' + this._lastName;
    },

    dispose: function() {
        alert('bye ' + this.getName());
    }
}
Demo.Person.registerClass('Demo.Person', null, Sys.IDisposable);

// Notify ScriptManager that this is the end of the script.
if (typeof(Sys) !== 'undefined') Sys.Application.notifyScriptLoaded();