jqueryMsg can not handle a message with source:
[[Special:GettingStarted/task/$1|Try another article ►]]
and a string parameter (e.g. 'copyedit').
This works fine on the server. It renders to:
<a href="/wiki/Special:GettingStarted/task/copyedit" title="Special:GettingStarted/task/copyedit">Try another article ►</a>
I suspect that support for replacements in such places needs to be broadened in general. Right now, EXTLINKPARAM is a related special case.
See Also: T45510: jqueryMsg can not handle external links/wikilinks with dollar signs in the URL/target