238105 - JavaScript used to increment a counter increments by two instead of one.

Status: RESOLVED FIXED

(Tech Evangelism Graveyard :: English US, defect)

Description

[Tom Williams]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7b) Gecko/20040316
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7b) Gecko/20040316

Ok, when I try to purchase some detergent from Safeway.com, I locate the item
and click the plus sign icon to increment the quantity to 1.  Instead it
increments to 2. I then use the minus sign icon to decrement the quantity to 1
and it decrements to 0.

Reproducible: Always
Steps to Reproduce:
1.Go to http://www.safeway.com/
2.Login to the site
3.Search for "All detergent"
4.Choose one detergent for testing and click the plus sign to increment the
quantity to 1 and the quantity should appear as 2.

Actual Results:  
The increment/decrement by 1 increments/decrements by 2 instead.

Expected Results:  
The increment/decrement by 1 should increment/decrement only by one.

This works fine in IE 6 on Windows XP Home Edition and behaves as described
above in Mozilla 1.6 and Mozilla 1.7b on Windows XP, Mozilla 1.7b on Linux and
Firefox Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7b) Gecko/20040317
Firefox/0.8.0+.

Comment 1

[Tom Williams]

Attachment: HTML testcase from Safeway.com site.

The ZIP file attachment contains the complete HTML for a product detail page,
which also exhibits the same misbehavior described in this bug report.

Comment 2

[Hermann Schwab]

testcase was saved as "Webpage, HTML only", should have been saved as "Webpage,
complete". It contains a lot of scripts, but more are missing, like
<script src="/superstore/actionmenu/buttons.js"></script>
<script src="/superstore/productlist.js"></script>
<script src="/superstore/gw_productlist.js"></script>
<script src="/superstore/buy.js"></script>

Comment 3

[Tom Williams]

Attachment: Safeway test case saved as "web page complete"

Ok, the original test case page appeared in a popup window. I've saved that
popup window page using the "Web Page Complete" option, as requested.

Comment 4

[Andrew Schultz]

the site uses generated javascript (gw_productlist.js: RenderProductRow) that
creates an image with a link and onclick handler.  Then, in hbe-11up.js, they
(for reasons beyond me) attempt to sniff out links and process them via
javascript.  The functions $x, $v and $t effectively do this:

for(var b=0; b<document.links.length; b++){
   eval("document.links[b].onmousedown=function(){ return
document.links["+b+"].onclick()}")
}

So each links onclick handler gets doubled as an onmousedown handler.  Surprise,
surprise the desired effect is doubled.

==> Evang.

Comment 5

[Tom Williams]

This problem did NOT happen with Mozilla 1.7-rc3 on Windows XP Home Edition, so
I'm not sure if the site changed or what.  :)

Peace..

Comment 6

[Andrew Schultz]

thanks, Tom.

I don't think Mozilla's behavior changed (I still see the problem with a
testcase from what you attached).

resolving as FIXED.