Webmaster in a Nutshell, Third Edition

Name

<xsl:key>

Synopsis

Keys are comparable to identifiers in XML. This element is used in <xsl:stylesheet> to create a reference to elements specified by the pattern and expression values. For example:

<xsl:key name="chap" match="chapter" use="@title"/>

This element creates a key named chap to identify chapters by title. You can then reference a chapter with an XPath function such as:

key("chap", "The XSL Language")
<xsl:key name="name" 
   match="pattern" 
   use="expression"/>