Searching for Javascript Onunload Browser Support information? Find all needed info by using official links provided below.
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://stackoverflow.com/questions/7527969/detecting-browsers-that-dont-support-onunload-onbeforeunload
For anyone stumbling across this post, this is a code snippet I use for detecting onbeforeunload support and if the browser doesn't support it I switch to onunload (note the use of jquery, obviously not required). In my case I use this code (and a little extra) to check if any AJAX requests are still active and stop the user navigating away.
https://developer.mozilla.org/en-US/docs/Web/API/WindowEventHandlers/onbeforeunload
WindowEventHandlers.onbeforeunload. Web technology for developers. ... If you do so, JavaScript in the page will be triggered on the subsequent return visit and update the content as desired. ... Expect poor cross-browser support. Non-standard. Expect poor cross-browser support. Deprecated. Not …
https://developer.mozilla.org/en-US/docs/Web/API/Window/unload_event
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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.
https://developer.mozilla.org/en-US/docs/Web/API/Window/beforeunload_event
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 …
https://www.w3schools.com/tags/ev_onunload.asp
The onunload attribute fires 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: If you reload a page, you will also trigger the onunload event (and the onload event).
https://community.adobe.com/t5/coldfusion/javascript-quot-onunload-quot-for-netscape/td-p/211572
Sep 11, 2007 · Hi, Netscape will not call the onUnload() event when the browser is closed by clicking on the "X" button in the top right corner of the browser window. Netscape will call the onUnload() event if the browser window is staying open but going to another URL. Does anybody know if there's a …
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
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