number value="position()" format="1. " : number « XSLT stylesheet « XML Tutorial

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File: Data.xml
<?xml version="1.0" encoding="UTF-8"?>

<provinces>
 <name>Alberta</name>
 <name>British Columbia</name>
 <name>Manitoba</name>
 <name>New Brunswick</name>
 <name>Newfoundland and Labrador</name>
 <name>Northwest Territories</name>
 <name>Nova Scotia</name>
 <name>Nunavut</name>
 <name>Ontario</name>
 <name>Prince Edward Island</name>
 <name>Quebec</name>
 <name>Saskatchewan</name>
 <name>Yukon</name>
</provinces>


File: Transform.xslt

<?xml version="1.0" encoding="US-ASCII"?>
<xsl:stylesheet version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="text" />

  <xsl:template match="provinces">
    <xsl:apply-templates select="name">
      <xsl:sort order="descending" />
    </xsl:apply-templates>
  </xsl:template>

  <xsl:template match="name">
    <xsl:number value="position()" format="1. " />
    <xsl:apply-templates />
    <xsl:text>&#10;</xsl:text>
  </xsl:template>

</xsl:stylesheet>
Output:
1. Yukon
2. Saskatchewan
3. Quebec
4. Prince Edward Island
5. Ontario
6. Nunavut
7. Nova Scotia
8. Northwest Territories
9. Newfoundland and Labrador
10. New Brunswick
11. Manitoba
12. British Columbia
13. Alberta