Board Thread:Support Requests - Getting Technical/@comment-80935-20140819142705/@comment-5558012-20140819143125

I don't know if there is a way to do so with Javascript, but I do know you can view pages with common categories by using the DynamicPageList.

Edit: I just learned you can use the CategoryIntersection extension of MediaWiki which would be the more specific extension for this task. I believe you have to ask Staff for it though.