module-class.js

var APP = APP || {};

// module-"class" (constructor)
APP.NewModule2 = (function (APP, $, undefined) {
    
    // static variables and methods
    var x = Math.random();
    
    return function () {
        // private variables and methods
        var y = Math.random();
        
        // public variables and methods
        
        this.z = Math.random();
        
        this.getX = function () {
            return x;
        };
        
        this.getY = function () {
            return y;
        };
    };
}(APP, jQuery));

module-literal.js

var APP = APP || {};

// module-literal
APP.newModule1 = (function (APP, $, undefined) {

    // private vars and methods
    var bar = 0;
    
    return {
        
        // public vars and methods
        foo: function () {
            // ...
        }
    
    };

})(APP, jQuery);