fn.nodeName

fn.nodenamefnnodename

/apidoc/8.0/fn:node-name.xml

Returns an expanded-QName for node kinds that can have names. For other kinds of nodes it returns the empty sequence. If $arg is the empty sequence, the empty sequence is returned.

The node whose name is to be returned.

arg

Node?

xs.QName?

var x = xdmp.unquote('<hello><goodbye>1</goodbye></hello>').toArray()[0];
fn.nodeName(x.xpath("/child::element()"));

=> hello (because the xdmp.unquote produces a ValueIterator 
          containing a document node, and the xpath starts at the
	  document node and selects the sequence of child elements,
	  which in this case is the root node named "hello")