We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Този сайт ще има ограничена функционалност, докато се извършва тече неговата поддръжка. Ако дадена статия не може реши проблема ви и искате да зададете въпрос, нашата общност е готова да ви помогне на @firefox в Twitter и /r/firefox в Reddit.

Търсене в помощните статии

Избягвайте измамите при поддръжката. Никога няма да ви помолим да се обадите или изпратите SMS на телефонен номер или да споделите лична информация. Моля, докладвайте подозрителна активност на "Докладване за злоупотреба".

Научете повече

window.onbeforeunload is not working in firefox latest version

  • 2 отговора
  • 33 имат този проблем
  • 9 изгледи
  • Последен отговор от BalajiPolisetty7

more options

Javascript window.onbeforeunload event has a function and at the end we have alert . in Previous version of firefox we used to get alert after executing that function . But in the latest version of firefox we are not getting . Can you please provide in which this will be resolved. or please provide the work around .. thanks alot.

Javascript window.onbeforeunload event has a function and at the end we have alert . in Previous version of firefox we used to get alert after executing that function . But in the latest version of firefox we are not getting . Can you please provide in which this will be resolved. or please provide the work around .. thanks alot.

Всички отговори (2)

more options

hello BalajiPolisetty7, it is the intended behaviour that alert() isn't allowed in onbeforeunload. many rogue sites use that to trap and scam users when they want to leave a page...

more options

Thanks for your timely reply . i need to call few java script functions on close of browser tab / window just want to know what is the in built javascript/ jquery functions that i need to use because older version of firefox used to support the window.onbeforeunload so last statement of the event we placed alert so everything got executed and alert box will come . Now with the current version without executing all the statements in the event browser is getting closed.

Please do the needful thanks alot