Thread:Project:Support desk/Watchlist error after upgrade to 1.18.1/reply (9)

Using Firebug just helped me to pin the issue down to the following error:

TypeError: $link.attr(...) is undefined

which refers to line 23 (beginning with "accesskeyTip...") in the file .../resources/mediawiki.action/mediawiki/mediawiki.action.watch.ajax.js. The fuller context is as follows:

function updateWatchLink( $link, action, state ) { // message keys 'watch', 'watching', 'unwatch' or 'unwatching'. var	msgKey = state === 'loading' ? action + 'ing' : action, accesskeyTip = $link.attr( 'title' ).match( mw.util.tooltipAccessKeyRegexp ), $li = $link.closest( 'li' );