91658 - [CBX]Extra option showing up when writing javascript select

Status: VERIFIED FIXED

(Core :: Layout: Form Controls, defect)

Description

[Jesse Houwing]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:0.9.2+)
Gecko/20010714
BuildID:    20011071408

I noticed some very strange behaviour when working with javascript generated
pulldown menu's.

Depending on the syntax it results in an empty option (not in the source, but in
the browser)


Reproducible: Always
Steps to Reproduce:
See Additional information. It includes source

Expected Results:  It shouldn't show up this extra option

first I tried this:

<form>
<select>
<script>
for (something){
   doument.writeln("<option value=''>some text</option>");
}
</script>
</select>
</form>

This doesn't works in Mozilla and netscape 4.7, but results in one extar option
(an empty one) when viewed with mozilla.

Then I tried this:

<form>
<script>
document.writeln("<select>");
for (something){
   doument.writeln("<option value=''>some text</option>");
}
</script>
</select>
</form>

This results in a good pulldown (eg no extra options) in Mozilla, but fails to
show up at all in Netscape 4.7.

I finally chose to do create the pulldown code in PHP, this does fix it, but was
a hell of a lot extra effort.

Comment 1

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

->form controls

Comment 2

[Madhur Bhatia]

tested on build id : 20010723 -- window2000

see attached testcase.
changing status to ==> New

Comment 3

[Madhur Bhatia]

Attachment: simplified testcase

Comment 4

[Jesse Houwing]

I just tried, it also goes wrong with "multiple" selects on 1 line and
"multiple" selects over more than 1 line.

Comment 5

[Martin Kuba]

I have the  same problem with 
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.5) Gecko/20011012
and 
Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:0.9.5) Gecko/20011011
The empty option is present always, additionally if I create <select>
tag using HMTL the other options are not selectable.

Comment 6

[Jesse Houwing]

That would be bug 100511

Comment 7

[Boris Zbarsky [:bzbarsky]]

jkeiser, this is fixed on the branch, right?

Comment 8

[Jesse Houwing]

Nut still not in the latest nightly. Just checked the testcase, still wrong

Comment 9

[John Keiser (jkeiser)]

Yeah, extra blank options are fixed with bug 34297 patch.  Setting dependent. 
Thanks!

Comment 10

[rods (gone)]

test after 34297 is checked in

Comment 11

[John Keiser (jkeiser)]

Fixed with bug 34297 landing.

Comment 12

[Madhur Bhatia]

verified fixed on
win2000 buildID: 2001-11-08-06-trunk
macOS 9.1 buildID: 2001-11-08-08-trunk

Comment 13

[Olav Vitters]

*** Bug 110124 has been marked as a duplicate of this bug. ***

Comment 14

[John Keiser (jkeiser)]

*** Bug 100996 has been marked as a duplicate of this bug. ***