Whats wrong in this code? (JS)

Question

Whats wrong there? I can't find whats wrong.
https://code.sololearn.com/WV89yXsY98en/
JS, line: 5
(Text is in german)

Answer 1

The problem is than the i var in time function is always 0 at start of any time() call then though you inctement it (its temporary and not global). Inside time() uoua will get a reference to button and if i<1 you remove it BUT its always the case then you will access to a null refetence to button (returned by getElementById) and, without checks, you try to access to a field of null object raising an exception

Answer 2

you have to declare let i = 0; outside the time function. otherwise it will always be 0.

Answer 3

👍👍👍

Answer 4

Its working now. Thank you!