var GF = function(){

​

    var mainLoop = function(){

        //main function, called each frame

        document.body.innerHTML = Math.random();

        // call the animation loop every 1/60th of second

        requestAnimationFrame(mainLoop);

    };

​

    var start = function(){

        requestAnimationFrame(mainLoop);

    };

​

    //our GameFramework returns a public API visible from outside its scope

    return {

        start: start

    };

};

​

var game = new GF();

game.start();