javascript - Trigger onbeforeunload event when there's still running ajax in the background

Question

I'm sending ajax calls on my web application and I want to show message or trigger onbeforeunload if there are still ajax call that is not yet finished when they leave the page.

So far, what I'm doing is I declared a global variable to count the running ajax calls - before sending ajax call I increment the counter and once ajax call is finished I decrement. I need to trigger the onbeforeunload when the counter is more than 0 when they leave page, I don't know if it's possible?

The lowest browser version I'm supporting is Firefox 45.0.2 Javascript only please.

question from:https://stackoverflow.com/questions/65937543/trigger-onbeforeunload-event-when-theres-still-running-ajax-in-the-background

Answer 1

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