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VisualizaçõesHow to really disable beforeunload?
A lot of web pages try to make you don't exit them by using the beforeUnload event on JS. Facebook, for instance, will show a warning if you try to use back / forward button , as the image below shows :
To avoid this i always used the code below to 'unbind' the event :
window.onbeforeunload = null;
But this is not working anymore. Even after running the code below, the warning message will still shows if i try to leave the page.
How to really get rid of these messages in a web application ? Facebook is only an example, i'm trying to do this using JS for study purposes.
1 Respostas
Responde à pergunta0
The event is probably being registered via addEventListener rather than onbeforeunload. You could try adding a new event listener that overrides the previous one.
window.addEventListener("beforeunload", (event) => {
event.stopImmediatePropagation();
}, true);
The third parameter being true causes the event to go all the way down, so any other listeners will be prevented.