JavaScript: Roll your own OO

fake_oo.js

jQuery.noConflict();
MyClass = function($){
    return function(val){
        console.log("Constructing MyClass Instance");
        var self = {};

        self.getVal = function(){
            return self.val;
        };
        self.val = val;
        return self;
    };
}(jQuery);

var myFirstInstance = MyClass("a");
var mySecondInstance = MyClass("b");

console.log(myFirstInstance.getVal());
console.log(mySecondInstance.getVal());

​

oo.js

jQuery.noConflict();
MyModule = function($){
    
    var pub = {};

    pub.MyClass = function(val){
        console.log("Constructing MyClass Instance with " + val);
        this.val = val;
    };

    pub.MyClass.prototype.getVal = function(){
        return this.val;
    };
    
    return pub;
}(jQuery);

var myFirstInstance = new MyModule.MyClass("a");
var mySecondInstance = new MyModule.MyClass("b");

console.log(myFirstInstance.getVal());
console.log(mySecondInstance.getVal());

​