Answers for "test:13 Uncaught ReferenceError: $ is not defined"

index.html?profile=Responsive:30 Uncaught ReferenceError: $ is not defined

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js"></script>

Uncaught ReferenceError: $ is not defined

You should put the references to the jquery scripts first.
<script src="jquery-3.5.1.js"></script>
<script type="text/javascript" src="script.js"></script>