Cheating too easy / Security problem

[3j14]

It's fairly easy to change the code on runtime. Just open developer option (e.g. in Chrome with cmd + alt+ i) and edit the client.js file.

I replaced
if( userInput != game ){
in Game.prototype.verifyAnswerwith
if( 1==0 ){
and reached a top score of 234. I could have played it forever clicking anything and it will always be correct.

You should consider using a server side game engine. But then you can't use github pages.

[3j14]

The first thing you can do is writing a gulpfile to minify the js file. It's not "hackproof" or something like that but a step in the right direction.

You can find an example here.
(npm and gulp required)

Also, you should never ever make your firebase APIKey publicly visible.

Happy coding 😉 you got this :)

[bognarlaszlo]

Another "hack" is possible:

var newscript = document.createElement('script');
      newscript.type = 'text/javascript';
      newscript.async = true;
      newscript.src = 'https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js';
      (document.getElementsByTagName('head')[0]||document.getElementsByTagName('body')[0]).appendChild(newscript);

var rightEl = $('#rightText');

var leftKeypress = $.Event('keydown', { keyCode: 37 });
var rightKeypress = $.Event('keydown', { keyCode: 39 });

function arrowTrigger(direction) {
    switch (direction) {
        case 'left':
            $('#game').trigger(leftKeypress);
        break;
        case 'right':
            $('#game').trigger(rightKeypress);
        break;
    }
}

function hackSite() {
    if( rightEl.css('display') == 'none' ) {
        arrowTrigger('left');
    } else {
        arrowTrigger('right');
    }
}

function startHacking() {
    setInterval( function() { hackSite() }, 100 );
}

function stopHacking() {
    for (var i = 1; i < 99999; i++)
        window.clearInterval(i);
}

startHacking();

I've got bored at 4766 points

One way could be if you make RIGHT/LEFT words appear in canvas maybe.

Anyways nice. Keep up the good work. ;)