Definition
DOM Standard defines NamedNodeMap
[Exposed=Window,
LegacyUnenumerableNamedProperties]
interface NamedNodeMap {
readonly attribute unsigned long length;
getter Attr? item(unsigned long index);
getter Attr? getNamedItem(DOMString qualifiedName);
Attr? getNamedItemNS(DOMString? namespace, DOMString localName);
[CEReactions] Attr? setNamedItem(Attr attr);
[CEReactions] Attr? setNamedItemNS(Attr attr);
[CEReactions] Attr removeNamedItem(DOMString qualifiedName);
[CEReactions] Attr removeNamedItemNS(DOMString? namespace, DOMString localName);
};