Why is the JavaScript not functioning?

Question

https://code.sololearn.com/W766R3XZUTSB/?ref=app

Answer 1

On line 13 of the JavaScript code, you're using the jQuery syntax. So you need to bring in the jQuery library. Also, on line 1,
`(function() {`
did you mean to do
`$(function() {`

Answer 2

This is what XXX said

https://code.sololearn.com/Wo23JYkitZRr/?ref=app

Answer 3

Thank you so much Simba

Answer 4

Pls can you edit it for me