[Foundation-l] [Wikitech-l] [ResourceLoader] JavaScript may break on your wiki: Fix it before that happens

[MZMcBride]

Guillaume Paumier wrote:
> The installation of ResourceLoader may cause compatibility issues with
> existing JavaScript code.

It'd be nice to have a list of things that will definitely be problematic
(must be fixed), things that might be problematic (should be fixed), and
things that are generally discouraged (can be fixed).

For example, Meta-Wiki was returning completely blank pages due to the use
of document.write() on pages that contained a particular CSS class. If
document.write() is completely disallowed, it should be noted somewhere
prominently along with other problematic or possibly problematic bits of
code. I briefly checked http://www.mediawiki.org/wiki/ResourceLoader but
didn't see this kind of list off-hand.

I wrote http://www.mediawiki.org/wiki/ResourceLoader/Coding_changes as a
stub, though shortly after doing so, I discovered
http://www.mediawiki.org/wiki/ResourceLoader/Documentation/Migration_guide
which was commented out from the list of documentation pages. It may or may
not make sense to merge these pages (it's still a little unclear to me who
the migration guide is intended for).

MZMcBride