Challenge stickman chapter 13

[eduardocintra]

Hi, I'm trying to do the challenge number # 4 of chapter 13, about stickman, and neither my code nor your works as expected, that is, do not update the DOM in measure that the user err on your guess, I know that this is because of alert () that's a blocker of DOM, what I want know it's, if possible force the browser update of DOM before alert ().

Thanks.

[bbones]

#4 example works with Firefox but doesn't work with Chrome and Edge. Alerts clear canvas area