How to distinguish Unload Event triggered by Refresh or Window Close?

Unload Event can be triggered both by Refresh action and Window Close action. is there a way to distinguish which action that actually trigger it? In my situation, i want to ignore the Refresh action. Could you please give me some insight what the work around is?

I noticed that there is already this sort of question asked, but it seems to they are all unresolved. Therefore i came up this question again and hopefully some intelligent guy can solve this p开发者_运维知识库roblem.

I do not believe the browser can distinguish between the two events.

Both are an unload event, and both will call any unload function that you have made.