Thread:Extension talk:GlobalCssJs/Add a link to special pages of local wikis

Is there a possibility to add a link to special pages, which changes for every wiki? With local js I used to link to "https://it.wikivoyage.org/wiki/Special:UnconnectedPages", "https://it.wikiquote.org/wiki/Special:UnconnectedPages" etc. How can I do now with global js? Does it exist something like "http://LOCALWIKI/wiki/Special:UnconnectedPages", so if I'm on it.quote it will link to https://it.wikiquote.org/wiki/Special:UnconnectedPages, if I'm on en.voy it will link to https://en.wikivoyage.org/wiki/Special:UnconnectedPages etc.?