402858 - <input type="button" /> elements within <a href=""> elements cause 2 requests.

Status: NEW

(Core :: DOM: Events, defect, P5)

Description

[Drarok Ithaqua]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a9pre) Gecko/2007110705 Minefield/3.0a9pre
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a9pre) Gecko/2007110705 Minefield/3.0a9pre

<a href="/somewhere/delete/confirm"><input type="button" value="Delete" /></a>

Clicking the button, it sends 2 requests to the server.

Reproducible: Always

Steps to Reproduce:
1.Create a page that logs requests
2.Click the button
3.read the log!
Actual Results:  
I received an error message in my web app saying the record didn't exist. This is because the 1st request deleted it, and the 2nd one was the error.

Expected Results:  
I'd like it to just ask for one copy of the pace.

Comment 1

[Drarok Ithaqua]

Attachment: A PHP example that demonstrates the bug

A running example can be seen here:
http://www.drarok.com/fftestcase.php

source (as a symbolic link):
http://www.drarok.com/fftestcase.phps

Comment 2

[Tyler Downer [He/Him]]

Does this happen with Firefox 3.6.6 or later in a fresh profile?

Comment 3

[Drarok Ithaqua]

Still happening for me on Firefox for Windows, 3.6.6, brand new profile (created via -profileManager).

I've restored the ancient test code and updated it a little, it's now moved to
http://drarok.com/fftestcase/

Clicking the button shows two requests with the same ID are logged. Clicking the link works as expected. The clear log links does what it says on the tin.

Comment 4

[Drarok Ithaqua]

P.S. this behaviour is apparent on Windows Vista, I no longer have access to an XP machine, but I suspect that is irrelevant.

Comment 5

[Emeric]

Hi,
The issue is reproductible for me with the latest version of Firefox :
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.3a5pre) Gecko/20100606 Minefield/3.7a5pre

I'll try to investigate it.

Thanks for your precious feedback Drarok !

Comment 6

[wim bolkensteyn]

Hello,

I have the same problem, but with a real button:
<a href="new_test.php?TEF=615&amp;rnbr=55" title="Add new Risk Iteration"><button>New Evaluation</button></a>'
<a href="new_test.php?TEF=615&amp;rnbr=55" title="Add new Risk Iteration">New Evaluation</a>
One click on the first link writes twice a line to a file, while a click on the second link gives only one line. I use XP and FF3.6.8
I can give some files to check.
wimb

Comment 7

[Nickolay_Ponomarev]

Attachment: testcase

I can reproduce with Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5; rv:2.0b6pre) Gecko/20100903 Firefox/4.0b6pre

Comment 8

[Nickolay_Ponomarev]

And also on Firefox 3.6.8 (with Firebug).

Comment 9

[Boris Zbarsky [:bzbarsky]]

Presumably the activate from the button also triggers the link... Pretty sure we have another bug about this.

Comment 10

[Firefox Bug Husbandry Bot]

https://bugzilla.mozilla.org/show_bug.cgi?id=1472046

Move all DOM bugs that haven't been updated in more than 3 years and has no one currently assigned to P5.

If you have questions, please contact :mdaly.