The namespace-uri function returns a string representing the namespace URI of the first node in a given node-set.
Syntax
namespace-uri( [node-set] )
Arguments
node-set(optional)- The namespace URI of the first node in this node-set will be returned. If this argument is omitted, the current context node will be used.
Returns
A string representing URI of the namespace in which the given node resides.
Notes
- If the given node does not have a specified namespace, the returned string will be an empty string.
- For nodes other than element and attribute nodes, the returned string will always be an empty string.
Defined
Gecko support
Supported.