getElementsByTagNameNS method

Returns a NodeList of all the Elements with a given local name and namespace URI in the order in which they are encountered in a preorder traversal of the Document tree.

getElementsByTagNameNS(namespaceURI, localName )
Parameters	StringnamespaceURI The namespace URI of the elements to match on. The special value "" matches all namespaces. StringlocalName The local name of the elements to match on. The special value "" matches all local names.
Returns	NodeList. A new NodeList object containing all the matched Elements.