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Specification: http://www.whatwg.org/specs/web-apps/current-work/multipage/common-dom-interfaces.html Multipage: http://www.whatwg.org/C#htmloptionscollection-0 Complete: http://www.whatwg.org/c#htmloptionscollection-0 Referrer: http://www.whatwg.org/specs/web-apps/current-work/multipage/the-button-element.html Comment: {HTMLOptionsCollection,HTMLSelectElement}.namedItem can return HTMLOptionElement Posted from: 81.242.201.8 by ms2ger@gmail.com User agent: Mozilla/5.0 (X11; Linux x86_64; rv:23.0) Gecko/20130421 Firefox/23.0
At least, I can't find a way to get something else returned either per spec or in Gecko.
Checked in as WHATWG revision r7897. Check-in comment: Turns out in practice you can never get an <optgroup> from these APIs, so, let's remove them from the IDL. http://html5.org/tools/web-apps-tracker?from=7896&to=7897