What is problem with my code

Question

I tried many ways but I couldn't find the problem can you guys please help me

https://code.sololearn.com/W4AKSDr2s2T8/?ref=app

Answer 1

There's a bunch wrong, but to start with:
* Wrap everything inside window.onload to avoid scope problems
* Delete the duplicate button.onclick definition
* Add an initializing request for animation frame, inside onload but outside of draw

That should be enough to get you on the right track.

Answer 2

https://code.sololearn.com/Wmybvs9124G2/?ref=app