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window unload event issue

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I have made some async function call in window unload event, which works perfect for all browser but in Firefox it creates issue whenever the closing tab is last tab. It does not call the windows unload event. Technically each tab must work same. like works in chrome. Whenever we have multiple tabs it works well but however the last tab closes it does not work.

I have made some async function call in window unload event, which works perfect for all browser but in Firefox it creates issue whenever the closing tab is last tab. It does not call the windows unload event. Technically each tab must work same. like works in chrome. Whenever we have multiple tabs it works well but however the last tab closes it does not work.

Ændret af Preetam Jakhmola den

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  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0

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jscher2000
  • Top 10 Contributor
8583 løsninger 70195 svar

I think I remember this from another thread somewhere.

Can you use navigator.sendBeacon()? See:

I actually haven't tested whether that works on the last tab or not.


There is a bug on file related to the last tab. If I understand it correctly:

https://bugzilla.mozilla.org/show_bug.cgi?id=1532555

Before commenting, see: Bugzilla Etiquette

I think I remember this from another thread somewhere. Can you use navigator.sendBeacon()? See: * https://developer.mozilla.org/docs/Web/API/Navigator/sendBeacon * https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/Synchronous_and_Asynchronous_Requests#Adapting_Sync_XHR_use_cases_to_the_Beacon_API I actually haven't tested whether that works on the last tab or not. ---- There is a bug on file related to the last tab. If I understand it correctly: * async XHR calls should never work in unload per spec * sync XHR calls in unload do not work in the last tab in Firefox * sync XHR calls in unload are expected to stop working in Chrome version 78 (https://www.chromestatus.com/feature/4664843055398912 ) https://bugzilla.mozilla.org/show_bug.cgi?id=1532555 Before commenting, see: [https://bugzilla.mozilla.org/page.cgi?id=etiquette.html Bugzilla Etiquette]
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