Can the unload Event be Used to Reliably fire ajax Request?

Question

I need a method to monitor user edit sessions, and one of the solutions I\'m reviewing will have me using an unload event to send an ajax request to inform the

Answer 1

Have you tried to use

var i = new Image(1,1); 
i.src='http://...'

And just returning some empty image from server. I think it should be reliable, script will block. BTW: nice to add timestamp to prevent caching.