Name

namespace-uri( )

Synopsis

                     string namespace-uri( )
string namespace-uri(node-set nodes)

With no arguments, this function returns the namespace URI of the context node. With a node-set as an argument, it returns the namespace URI of the first node in the node-set. If this node does not have a namespace URI (i.e., it's not an element or an attribute node; it is an element or attribute node, but is not in any namespace; or the node-set is empty), then it returns the empty string.