Why this ball stops running?

Question

As in question. please help.
https://code.sololearn.com/WVEW5l3CdZJo/?ref=app

Answer 1

Check your JS your actions don’t call a restart on subsequent clicks maybe consider a start button, stop button and a random function that bounces you off the edges and sends you in a random direction

Answer 2

The question is unclear are you asking why it stops moving when you press the button again?