Answer 1

When debugging, always check for typos.

In js, It should be flexSwitchCheckDefault not lexSwitchCheckDefault

Answer 2

Can you send the code instead 😃
Because it's hard to read here
Just copy paste this in code playground and share the link and people maybe able to help you better ☺️

Answer 3

Try to post this format .Then you will get more help:
https://www.sololearn.com/post/75089/?ref=app

Answer 4

great