Find all needed information about Browser Onbeforeunload Support. Below you can see links where you can find everything you want to know about Browser Onbeforeunload Support.
https://developer.mozilla.org/en-US/docs/Web/API/WindowEventHandlers/onbeforeunload
The onbeforeunload property of the WindowEventHandlers mixin is the EventHandler for processing beforeunload events. These events fire when a window is about to unload its resources. At this point, the document is still visible and the event is still cancelable. ... Expect poor cross-browser support. Deprecated. Not for use in new websites ...
https://stackoverflow.com/questions/7389554/crossbrowser-onbeforeunload
It's my recollection that IE was the only browser to implement onbeforeunload, but some browsers have taken it upon themselves to implement it. Long story short, IE is about the only browser (with very finite exceptions) you'll find this event consistently in.
https://www.w3schools.com/jsref/event_onbeforeunload.asp
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. The default message that appears in …
https://developer.mozilla.org/en-US/docs/Web/API/Window/beforeunload_event
onbeforeunload: This event enables a web page to trigger a confirmation dialog asking the user if they really want to leave the page. If the user confirms, the browser navigates to the new page, otherwise it cancels the navigation. ... Expect poor cross-browser support. Non-standard. Expect poor cross-browser support. Deprecated. Not for use in ...
http://help.dottoro.com/ljhtbtum.php
Note that event listeners cannot be registered for the onbeforeunload event with the addEventListener and attachEvent methods (only Safari and Google Chrome support it). For a cross-browser solution, register the event handler in HTML (with the onbeforeunload attribute of the body element) or with the onbeforeunload inline event property of the ...
https://www.w3schools.com/Tags/ev_onbeforeunload.asp
The onbeforeunload event fires 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. The default message that appears in …
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://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 not executing on refresh click and browser …
https://developer.mozilla.org/en-US/docs/Web/API/Window/unload_event
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https://github.com/Aelios/crossbrowser-onbeforeunload
Aug 01, 2014 · Crossbrowser Javascript with custom message on onbeforeunload event - Aelios/crossbrowser-onbeforeunload
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