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Chapter 13. XSL Transformations > Sorting Elements
Sorting Elements
You can use the <xsl:sort> element to sort node sets. You use this element inside <xsl:apply-templates> and then use its select attribute to specify what to sort on. For example, here's how I sort the planets based on density:
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<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="PLANETS">
<HTML>
<HEAD>
<TITLE>
Planets
</TITLE>
</HEAD>
<BODY>
<H1>Planets sorted by density</H1>
<TABLE>
<TD>Planet</TD>
<TD>Mass</TD>
<TD>Day</TD>
<TD>Density</TD>
<xsl:apply-templates>
<xsl:sort select="DENSITY"/>
</xsl:apply-templates>
</TABLE>
</BODY>
</HTML>
</xsl:template>
<xsl:template match="PLANET">
<TR>
<TD><xsl:apply-templates select="NAME"/></TD>
<TD><xsl:apply-templates select="MASS"/></TD>
<TD><xsl:apply-templates select="DAY"/></TD>
<TD><xsl:apply-templates select="DENSITY"/></TD>
</TR>
</xsl:template>
</xsl:stylesheet>
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