original bug description and test case can be found here:

http://groups.google.com/group/jquery-dev/browse_thread/thread/831a7ff4a9ffdaae

I have discovered a potential bug, or at least difference between 1.1

and 1.2, when using the .val() method. Previously, when running this

on a non-form element (usually a link), it would return null or

perhaps undefined (a 'falsy' value). Now it generates an error which

halts script execution.

Below is a stripped-down example of how I am using it in my code. The

line which breaks is:

item: $.trim($(event.target).attr("src") || target.val() ||

target.text()),

To reproduce the error, include this script on any page, and place a

breakpoint on the send(params) statement. The problem can be seen

when any link is clicked: the breakpoint is never reached.

My simple workaround has been to swap the target.text() and

target.val() positions in the problematic line.