Is there an ajaxify page-change event similar to beforeunload

[JJSagan]

Hi,
I am looking to do some work just before the page changes.
Using beforeunload works but only if the URL is different than the forum URL.

window.addEventListener('beforeunload', unloadPage);
		function unloadPage(e) {
			// Cancel the event
			e.preventDefault();
			// Chrome requires returnValue to be set
			e.returnValue = '';
		}

Is there any action:ajaxify event I may use for this purpose?

Thanks in advance!
JJ.

[baris]

action:ajaxify.start ?

[JJSagan]

Yes @baris that's it, works perfectly
Thank you so much!