Board Thread:General Coding Help/@comment-24778948-20140922020619/@comment-4018164-20140922040718

It depends on what you mena by "interactive". Literally, the code that you put determines what sort of additional interactivity you would have or would not have in the wiki, and the MediaWiki page is only where you save that code.

There are some less common .js pages (for site-wide scope), which only affect certain users:
 * MediaWiki:Group-autoconfirmed.js
 * MediaWiki:Group-bot.js
 * MediaWiki:Group-bureaucrat.js
 * MediaWiki:Group-sysop.js