xsl:if instruction enables conditional processing : if « XSLT stylesheet « XML Tutorial

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2. XSLT stylesheet
3. if

File: Data.xml
<?xml version="1.0" encoding="utf-8"?>
<list>
    <entry name="A"/>
    <entry name="B"/>
    <entry name="C"/>
    <entry name="D"/>
</list>
File: Transform.xslt

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet
      version="1.0"
      xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

    <xsl:template match="list">
      <xsl:for-each select="entry">
        <xsl:value-of select="@name"/>
        <xsl:text>, </xsl:text>
      </xsl:for-each>
    </xsl:template>
</xsl:stylesheet>

Output:

<?xml version="1.0" encoding="UTF-8"?>A, B, C, D,