How to deactivate a link to the page once you’re on it?

Has anyone come across how to deactivate a link in the main menu once you’re on that page? Then when you select a different link in nav and go to that page the link is active again. Hope that made sense, basically looking for a way to deactivate a link once your on the page so that if you click it again it wouldn’t take you to the page your already on.

Thanks in advance