This is relevant for newer versions of Chrome.
Like @Garry English said, sending an async
request during page onunload
will not work, as the browser will kill the thread before sending the request. Sending a sync
request should work though.
This was right until version 29 of Chrome, but on Chrome V 30 it suddenly stopped working as stated here.
It appears that the only way of doing this today is by using the onbeforeunload
event as suggested here.
BUT NOTE: other browsers will not let you send Ajax requests in the onbeforeunload event at all. so what you will have to do is perform the action in both unload and beforeunload, and check whether it had already taken place.
Something like this:
var _wasPageCleanedUp = false;
function pageCleanup()
{
if (!_wasPageCleanedUp)
{
$.ajax({
type: 'GET',
async: false,
url: 'SomeUrl.com/PageCleanup?id=123',
success: function ()
{
_wasPageCleanedUp = true;
}
});
}
}
$(window).on('beforeunload', function ()
{
//this will work only for Chrome
pageCleanup();
});
$(window).on("unload", function ()
{
//this will work for other browsers
pageCleanup();
});