Find all needed information about Window Onbeforeunload Browser Support. Below you can see links where you can find everything you want to know about Window Onbeforeunload Browser Support.
https://stackoverflow.com/questions/158673/onbeforeunload-support-detection
Mobile browsers don't tend to not support beforeunload because the browser can go into the background without unloading the page, then be killed by the operating system at any time. However, all modern non-mobile browsers support it. Therefore, you can just check if the browser is a mobile browser. To solve the problem I use:
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.
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/beforeunload_event
Attaching an event handler/listener to window or document's beforeunload event prevents browsers from using in-memory page navigation caches, like Firefox's Back-Forward cache or WebKit's Page Cache. The HTML specification states that calls to window.alert(), window.confirm(), and window.prompt() methods may be
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 the confirmation box, is different in different browsers.
https://forums.asp.net/t/2115978.aspx?window+onbeforeunload+not+working+in+Chrome
Feb 20, 2017 · window.onbeforeunload not working in Chrome [Answered] RSS. ... In modern browsers, alert or confirm are not supported in onbeforeunload. The function should return a string, and the browser will prompt the user with this string and allow canceling the navigation. ... We are trying to better understand customer views on social support ...
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 the confirmation box, is different in different browsers.
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://community.adobe.com/t5/captivate/ie-onbeforeunload-event-and-javascript-calls/td-p/5329614
Jul 23, 2013 · If you've ever attempted this kind of thing, there are two browser events (speaking specifically about IE 7/8 which is my target browser) - onbeforeunload and onunload that can be used to trigger the display of a dialog when the user tries to close the browser window/tab. Both of these are somewhat problimatic but generally workable.
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