key

The key function returns a node-set of nodes that have the given value for the given key.

Syntax

key( keyname, value )

Parameters

• keyname
  • : A string containing the name of the xsl:key element to be used.
• value
  • : The returned node-set will contain every node that has this value for the given key.

Return value

A node set.

Description

• The xsl:key element defines what attribute on what given elements will be used to match the key.

This function is an XSLT-specific addition to XPath. It is not a part of the core XPath function library.

Specifications

XSLT 1.0 12.2

Gecko support

Supported.