Is it possible to send an jQuery.ajax call or equivalent without any sort of response? I want to trigger something on the server as I leave the page with the onbeforeunload
Assuming you're using something like this:
$.ajax({ url: "test.html", context: document.body })
(borrowed from http://api.jquery.com/jQuery.ajax/ and edited), you can discard the response.
http://api.jquery.com/jQuery.ajax/