oop.js is a lightweight pseudo-object-oriented library for extensible and reusable objects in JavaScript. oop.js works in the browser and in Node.JS projects.

Developed by aewing

Defining a new class:

$class('Bar').via(function() {
    this.construct = function(a, b) {
        this.a = a;
        this.b = b;    
    };
    this.name = 'Bar';
    this.baz = function() {
        return this.a + this.b;
    }
});

Instantiating and using the class:

var bar = new Bar(5, 10);
console.log(bar.name, bar.baz());

Output:

Bar, 15

Extending our defined class:

$class('Foo').extends('Bar').via(function() {
    this.name = 'Foo';
    this.construct = function(a, b) {
        this.a = a*2;
        this.b = b*2;
    };
});
var foo = new Foo(5,10);
console.log(foo.name, foo.baz());

Output:

Foo, 30

To install oop.js with Bower, type the following from your project directory:

bower install https://github.com/oopjs/oopjs.git    

Then you can require('oopjs') or you include the oop.js file, or in the browser:

<script src="bower_components/oopjs/src/oopjs/oop.js" type="text/javascript"></script>

To learn more, check out the documentation or try oop.js now.

• 6/28/2014 - Added proxy to $oop.new so class objects can be constructed normally
• 6/29/2014 - Added support for Node.JS & Bower