Node getNamedItemNS(String namespaceURI, String localName);
namespaceURI
The namespaceURI property of the desired node, or null for no namespace.
localName
The localName property of the local node.
The element of the NamedNodeMap that has the specified namespaceURI and localName properties, or null if there is no such node.
getNamedItemNS( ) looks up an element of a NamedNodeMap by namespace and local name. It is useful only with XML documents that use namespaces.