Why my JQuary code not run?

Question

This is my code please help.
https://code.sololearn.com/Wo63twZ9Elua/?ref=app

Answer 1

You just need to add a link to support the Jquery
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Answer 2

Thanks