Browser keyboard/mouse/touch

Keyboard

var keys;
document.addEventListener('keydown', function (e) {
    e = e ? e : window.event;
    keys[e.keyCode] = true;
});
document.addEventListener('keyup', function (e) {            
    e = e ? e : window.event;
    keys[e.keyCode] = false;
});

Mouse

function getMousePos(event) {
    if (~event.type.indexOf("touch")) {
        return {
            x: event.targetTouches[0].pageX,
            y: event.targetTouches[0].pageY
        }
    }
    return {
        x: event.layerX,
        y: event.layerY
    };
}