Bug 43887 - HTMLSelectElement.size defaults to 0
Summary: HTMLSelectElement.size defaults to 0
Alias: None
Product: WebKit
Classification: Unclassified
Component: DOM (show other bugs)
Version: 528+ (Nightly build)
Hardware: Mac (Intel) OS X 10.6
: P2 Normal
Assignee: Nobody
URL: http://jsbin.com/aqana/2/
Depends on:
Blocks: 50380
  Show dependency treegraph
Reported: 2010-08-11 16:02 PDT by Mike Taylor
Modified: 2010-12-02 19:30 PST (History)
4 users (show)

See Also:

Patch (6.05 KB, patch)
2010-12-02 03:30 PST, Dai Mikurube
ap: review-
Details | Formatted Diff | Diff

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Description Mike Taylor 2010-08-11 16:02:05 PDT
Per the HTML5 spec, a select element without a required attribute should have its size attribute default to 1. 


`The size attribute gives the number of options to show to the user. The size attribute, if specified, must have a value that is a valid non-negative integer greater than zero. If the multiple attribute is present, then the size attribute's default value is 4. If the multiple attribute is absent, then the size attribute's default value is 1.`

Current builds default to 0.

Code used in test case (http://jsbin.com/aqana/2/edit):

var select = document.createElement('select');
function testSize(el) {
  return el.size == 1;

testSize(select); // false
Comment 1 Alexey Proskuryakov 2010-08-12 02:05:22 PDT
What do other browsers do? Firefox seems to match WebKit, but I didn't test IE.
Comment 2 Mike Taylor 2010-08-12 06:31:48 PDT
Hmm, it appears that Webkit, Firefox 4 and IE8 all do the same thing, that is set @size to 0. I thought Gecko was doing something else last night, but I was mistaken.
Comment 3 Alexey Proskuryakov 2010-08-12 07:33:23 PDT
Would you be willing to report a bug against HTML5? You can file it at <http://www.w3.org/Bugs/Public/enter_bug.cgi?product=HTML%20WG>, or simply e-mail the working group.
Comment 4 Mike Taylor 2010-08-12 14:59:40 PDT
I've written the working group about this:

Comment 5 Dai Mikurube 2010-12-02 01:23:13 PST
(In reply to comment #4)
Reading the message on the working group, it looks better to change the default size to 1 or 4.
> http://lists.w3.org/Archives/Public/public-html/2010Aug/0126.html

I'll be starting to work on this since it blocks the bug 50380.
Comment 6 Dai Mikurube 2010-12-02 03:30:20 PST
Created attachment 75366 [details]
Comment 7 Mounir Lamouri 2010-12-02 03:33:49 PST
FYI, we did this change for Gecko and some sites broke [1]. So, we've reverted to returning 0. By the way, the specs require to return 1 as a default value even if multiple is set (but I agree this non-sense). There is a bug filed for that [2].

[1] https://bugzilla.mozilla.org/show_bug.cgi?id=603141
[2] http://www.w3.org/Bugs/Public/show_bug.cgi?id=11162
Comment 8 Alexey Proskuryakov 2010-12-02 09:04:16 PST
Comment on attachment 75366 [details]

So I guess that we don't want to do this.
Comment 9 Kent Tamura 2010-12-02 19:13:51 PST
(In reply to comment #8)
> (From update of attachment 75366 [details])
> So I guess that we don't want to do this.

I agree.  We shouldn't change this for now.
Comment 10 Dai Mikurube 2010-12-02 19:16:57 PST
Ok, let's close it.