While Sitemap Creator will download JavaScript enabled websites and detect any linked JavaScript in HTML tags, it does not parse and execute JavaScript, meaning it will not be able to fully crawl websites that use JavaScript to construct the page. Experimental JavaScript enabled-crawling can be enabled, but this has several caveats.
Sitemap Creator only remaps links HTML and CSS, not JavaScript.
While Sitemap Creator will do its best to create an offline copy of a website, data driven websites may not work as expected once they have been copied as the underlying source code and databases for a website can never be downloaded unless expressly offered by website owners.