What does XMLHttpRequest status code -1 mean?

Question

I've added logging of failed AJAX requests to my application and I'm seeing a lot of failures with a status code of -1.

I can't find a definition of the -1 status code anywhere.

Does anyone know what this represents?

I'm seeing it from IE 8.0, Firefox 13, Chrome 20, and more. It doesn't appear to be a browser specific quirk.

Answer 1

After enhancing our logging to include the status text it was clear what the -1 code means. transaction aborted is what status text shows in Chrome 20.