Find all needed information about Window Onunload Support. Below you can see links where you can find everything you want to know about Window Onunload Support.
https://www.w3schools.com/jsref/event_onunload.asp
The onunload event occurs once a page has unloaded (or the browser window has been closed). onunload occurs when the user navigates away from the page (by clicking on a link, submitting a form, closing the browser window, etc.). Note: The onunload event is also triggered when a user reloads the page (and the onload event).
https://developer.mozilla.org/en-US/docs/Web/API/WindowEventHandlers/onunload
The onunload property of the WindowEventHandlers mixin is the EventHandler for processing unload events. These events fire when the window is unloading its content and resources. The resource removal is processed after the unload event occurs.
https://developer.mozilla.org/en-US/docs/Web/API/Window/unload_event
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https://support.mozilla.org/en-US/questions/993963
Problem statement is want to execute piece of code only on browser close , refreshing the browser tab , tab close . Previous version of firefox used to execute the code in window.onbeforeunload in all the 3 events mentioned above but now code in window.onbeforeunload is …
http://help.dottoro.com/ljflhicd.php
Browser support: Occurs before the browser unloads the document. The onunload event is not cancelable, because of security reasons. To display a comfirmation dialog box, where the user can confirm whether he wants to stay or leave the current page, use the onbeforeunload event.
http://w3schools.invisionzone.com/topic/48418-why-onunload-does-not-work/
Sep 04, 2013 · Hey guys, I have a small problem here the onunload event does not work on my firefox...don't know why. this was the example i tried to run on my browser it's from w3schools
https://api.jquery.com/unload/
This method is a shortcut for.on("unload", handler). The unload event is sent to the window element when the user navigates away from the page. This could mean one of many things. The user could have clicked on a link to leave the page, or typed in a new URL in the address bar.
https://exceptionshub.com/window-onbeforeunload-and-window-onunload-is-not-working-in-firefox-safari-opera.html
Nov 19, 2017 · Questions: In my chat application I need to get confirmation from user , when my application closes. So I used the window.onbeforeunload for confirmation alert and window.onunload for logout(). But both functions are working in IE and Chrome.( Application works fine) window.onbeforeunload not working in Opera and my message will not get displayed in Firefox. ...
https://www.w3schools.com/jsref/event_onbeforeunload.asp
Definition and Usage The onbeforeunload event occurs when the document is about to be unloaded. This event allows you to display a message in a confirmation dialog box to inform the user whether he/she wants to stay or leave the current page. Note : This only works in Internet Explorer.
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