2010/11/16 Cindy Cicalese cicalese@mitre.org:
$wgUseAjax = true; $wgAjaxExportList[] = 'testQueryPopulateDiv';
This AJAX framework is obsolete. You should use the bot API for AJAX instead. Documentation is at http://www.mediawiki.org/wiki/API . There's a section on how to create your own modules from an extension too.
If all you need to do is parse some wikitext without otherwise needing to do things in PHP (i.e. if you can generate the wikitext to parse on the JS side), you could use the existing action=parse module to parse it.
Roan Kattouw (Catrope)