<script src="https://code.jquery.com/jquery-3.5.1.js"></script> code example
Example 1: jquery cdn
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
Example 2: jquery cdn
<script src="https://code.jquery.com/jquery-3.5.1.min.js" integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>