471741 - Setting selectedIndex to an out-of-bounds value should have the same effect as setting it to -1

Status: RESOLVED FIXED

(Core :: Layout: Form Controls, defect)

Description

[Mats Palmgren (inactive)]

Setting selectedIndex to an out-of-bounds value should have the same effect as setting it to -1.

http://www.whatwg.org/specs/web-apps/current-work/#the-select-element/selec/
"The selectedIndex  DOM attribute, on getting, must return the index of the first option element in the list of options in tree order that has its selectedness set to true, if any. If there isn't one, then it must return -1.

On setting, the selectedIndex attribute must set the selectedness of all the option elements in the list of options to false, and then the option element in the list of options whose index is the given new value, if any, must have its selectedness set to true."

This is what Opera 9.51, Safari 3.2.1 and IE8b2 does.

Firefox throws an exception:
Error: uncaught exception: [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIDOMHTMLSelectElement.selectedIndex]"  nsresult: "0x80004005 (NS_ERROR_FAILURE)"  location: "JS frame :: file:///usr/local/test/selectedIndex.html :: sel :: line 7"  data: no]

Comment 1

[Mats Palmgren (inactive)]

Attachment: Patch rev. 1

Comment 2

[Mats Palmgren (inactive)]

Corrected HTML5 url:
http://www.whatwg.org/specs/web-apps/current-work/#dom-select-selectedindex

Comment 3

[Mats Palmgren (inactive)]

Attachment: Patch rev. 2

With slightly updated testcase.

Comment 4

[Mats Palmgren (inactive)]

http://hg.mozilla.org/mozilla-central/rev/9fa073e374f7

-> FIXED