JQuery support in HTML

Check this page: https://help.adobe.com/en_US/framemaker/using/index.html#t=using-framemaker%2Fuser-guide%2Ffrm_generating_output-multichannel-html-templates.html

You would need to link jQuery in the <head> section of the page template.

If you host jQuery yourself on your server:

<script src="path/to/your/jquery-javascript/jquery-3.6.0.min.js"></script>

If you reference jQuery remotely, e.g. like this:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>

Hope that helps.

What version of FM are you using? Structured or unstructured? What output format?