Why code not running?

Question

Browser's error😒

https://code.sololearn.com/Wpa32aHaZfRT/?ref=app

Answer 1

https://www.sololearn.com/post/90825/?ref=app

By the way almost every new user will face that problem.
This question have been asked several times(too much) before for that reason.

WE DON'T ACCEPT OFFENSIVE LANGUAGE

Using the search bar before posting questions will help the community by avoiding duplicates. Please take it into account the next time.
https://www.sololearn.com/discuss/612424/?ref=app
https://www.sololearn.com/discuss/259009/?ref=app
https://www.sololearn.com/discuss/1629118/?ref=app
https://www.sololearn.com/discuss/1469777/?ref=app
https://www.sololearn.com/discuss/139237/?ref=app
https://www.sololearn.com/discuss/1626865/?ref=app
https://www.sololearn.com/discuss/5067/?ref=app
https://www.sololearn.com/discuss/1218303/?ref=app
https://www.sololearn.com/discuss/1067840/?ref=app
https://www.sololearn.com/discuss/149523/?ref=app
https://www.sololearn.com/discuss/1675746/?ref=app
https://www.sololearn.com/discuss/261854/?ref=app
https://www.sololearn.com/discuss/2171295/?ref=app

Answer 2

Use window.onload

https://code.sololearn.com/Wri9h8smJx5g/?ref=app

Answer 3

Thanks