Is it important to use rel="nofollow"
on jQuery interaction links?
<a href="#" rel="nofollow">jQuery interaction link</a>
No. "Nofollow" provides a way for webmasters to tell search engines "Don't follow links on this page" or "Don't follow this specific link." Since that link isn't an actual hyperlink but a JavaScript trigger, there's no need to use nofollow on it.
Generally speaking, nofollow should be used on the following type of links: