fn:namespace-uri

namespace-uri() ➔ xs:anyURI

Returns the namespace URI of the name of the context node.

There are no arguments
Result		xs:anyURI

namespace-uri($arg as node()?) ➔ xs:anyURI

Returns the namespace URI of the name of the supplied node.

Arguments
	$arg	node()?	The node whose namespace URI is required
Result		xs:anyURI

http://www.w3.org/2005/xpath-functions