I have an onbeforeunload event that's supposed to get triggered any time a user goes to a new page. It works well enough, but I've found that it also gets triggered in Chrome any time a user downloads a file from the page they're on.

I'd like to be able to tell if the event is getting fired because it's being triggered by a file download. What's the best way to do that?

EDIT: As a clarification, I don't own the site that I'm listening to onbeforeunload on. The event is listened to by a Javascript snippet that's being installed on 3rd party sites.

javascript dom-events onbeforeunload
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