Javascript event that runs before page changes

Question

Is there such a thing?

I know that I can hook my function on the click event of all links, but there are other situations where a page is changed, like refresh or wh

Answer 1

When a page is reloaded, whatever was there before will be gone. Thus, it seems like what you're talking about is something you'd do at DOMReady or "load" in the new page, since you can't "push" code from the former page into the new context.