This page demonstrates the JamComments web component, a custom element allowing you to declaratively embed client-side comments into a page.
It's a great approach if you, for whatever reason, you can't integrate JamComments into your build process or on a server. Load the source, drop in the element, and you're good to go.
<script src="https://unpkg.com/@jam-comments/component"></script>
<jam-comments data-api-key="TAXATION-IS-THEFT-42"></jam-comments>See the documentation for more information on setting this up.