Ticket #6299 (closed bug: duplicate)
jQuery 1.4.2 breaks AJAX success/failure behaviour
| Reported by: | damian.biollo | Owned by: | |
|---|---|---|---|
| Priority: | undecided | Milestone: | 1.4.3 |
| Component: | ajax | Version: | 1.4.2 |
| Keywords: | Cc: | ||
| Blocking: | Blocked by: |
Description
There is a small change to the behaviour of httpSuccess() which breaks the behaviour of AJAX in Firefox.
The breakage is in the scenario when a user clicks a link while an AJAX request is being processed. In Firefox, clicking a link to navigate will immediately cancel all outstanding HTTP requests. (Check Firebug Console to see the behaviour).
In previous versions of jQuery, this would result in a "failure" - the failure ajax handler would be called.
In 1.4.2 this results in the "success" handler being called, which seems quite wrong.
The bug is due to adding a condition of "or xhr.status == 0" to the httpSuccess function.
Change History
comment:4 Changed 3 years ago by addyosmani
- Priority set to undecided
- Status changed from new to closed
- Resolution set to duplicate
This is one of the bugs that was successfully addressed in #6060. As a fix for it will likely be included in 1.4.3, I am closing this ticket and assigning it duplicate status.
Please follow the bug reporting guidlines and use jsFiddle when providing test cases and demonstrations instead of pasting the code in the ticket.

Similarly, xhr.status == 0 when connection to the server fails so the success callback runs.