I am using Firebug 1.10.2 with Firefox 14.0.1. When showing a web page, the Firebug add-on has this "behavior": Firebug’s “Aborted” message upon Ajax request.
What should I make? Is it so dangerous that I must improve my web application because the presence of some error, or it is a Firebug bug or something else?
Please see the documentation of XHR open() for example here: https://developer.mozilla.org/en-US/docs/DOM/XMLHttpRequest
Note: Calling this method an already active request (one for which open()or openRequest()has already been called) is the equivalent of calling abort().
Just create a new XHR instance whenever you need one. Better yet, use jQuery or other JS library to do AJAX. It should shield you from these intricacies.
I saw this problem when trying to load a JavaScript file using HTTPS, but was serving the site on my local development environment using HTTP. The request to fetch the JavaScript file would fail with the Aborted message in FireBug. Making the requests use the same protocol worked for me.
来源：https://stackoverflow.com/questions/12116641/how-to-solve-firebug-s-aborted-messages-upon-ajax-requests