fn:prefix-from-QName
Extracts the prefix component of a QName value. Returns an empty sequence if the QName has no prefix.
prefix-from-QName($arg as xs:QName?) ➔ xs:NCName?
Arguments | |||
| $arg | xs:QName? | The QName whose prefix component is required |
Result | xs:NCName? | ||
Namespace
http://www.w3.org/2005/xpath-functions