object oriented javascript a la typescript

oojs.js

var App = (function () {

    function App() {
        console.log("App constructor");
    }

    App.prototype.init = function () { // poluting the prototype => instance method
        console.log("app.init() is instance init  \n" + this);
    };

    App.init = function () { // static method
        console.log("App.init() is static init \n" + this);
    };

    return App;
})();

var app;

window.onload = function () {

    console.log("--- static init: ---");
    App.init();

    console.log("\n--- instance init: ---");
    app = new App();
    app.init();
};