Board Thread:Support Requests - Getting Started/@comment-4260260-20130306195244/@comment-3335785-20130306215137

Well, the content is preserved in the page history. If there is any vandalism you can just revert it back to the intended version. There really isn't any need for a back-up.

You can request a database dump of the wiki to be imported to a new wiki. I guess this is what you want, but once imported the pages will not update meaning you'd either need to apply the changes to both wikis or do the import process again. You can request a dump of a wiki from a certain date, so a second wiki really isn't necessary.

Javascript, whilst capable of doing this, really isn't suitable for displaying entire pages without very good reason.