How to download a file with events as like that of Ajax Upload. Its impossible to attach an event before and after a download through javascript. Browser doesn’t allow this type of events for security reasons. Usually a file can be downloaded simply clicking on <A> link pointing to the URL and browser prompts a save dialog to the user.

A file download sometimes may take several minutes, there is no way to display a progress message (ex: downloading.. please wait) to the user like that of Ajax loading (once save dialog displayed , it should be hidden). Read more