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<h1>XSLT <xsl:if> Element</h1>
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<p class="intro">The <xsl:if> element is used to put a conditional test
against the content of the XML file.</p>
<hr />
<h2>The <xsl:if> Element</h2>
<p>To put a conditional if test against the content of the XML file, add an
<xsl:if> element to the XSL document.</p>
<h3>Syntax</h3>
<table width="100%" border="1" class="ex" cellspacing="0" id="table1">
<tr>
<td>
<pre><xsl:if test="<i>expression</i>">
...
...some output if the expression is true...
...
</xsl:if></pre>
</td>
</tr>
</table>
<br />
<hr />
<h2>Where to Put the <xsl:if> Element</h2>
<p>To add a conditional test, add the <xsl:if> element inside the <xsl:for-each> element in
the XSL file:</p>
<table width="100%" border="1" class="ex" cellspacing="0">
<tr>
<td>
<pre><?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<html>
<body>
<h2>My CD Collection</h2>
<table border="1">
<tr bgcolor="#9acd32">
<th>Title</th>
<th>Artist</th>
</tr>
<xsl:for-each select="catalog/cd">
<span class="insert"><xsl:if test="price &gt; 10"></span>
<tr>
<td><xsl:value-of select="title"/></td>
<td><xsl:value-of select="artist"/></td>
</tr>
<span class="insert"></xsl:if></span>
</xsl:for-each>
</table>
</body>
</html>
</xsl:template>
</xsl:stylesheet></pre>
</td>
</tr>
</table>
<p><b>Note:</b> The value of the required <b>test</b> attribute contains the expression to be
evaluated.</p>
<p>The code above will only output the title and artist elements of the CDs that
has a price that is higher than 10.<br />
</p>
<p>The result of the transformation above will look like this:</p>
<h2>My CD Collection</h2>
<table border="1">
<tr bgcolor="#9acd32">
<th>Title</th>
<th>Artist</th>
</tr>
<tr>
<td>Empire Burlesque</td>
<td>Bob Dylan</td>
</tr>
<tr>
<td>Still got the blues</td>
<td>Gary Moore</td>
</tr>
<tr>
<td>One night only</td>
<td>Bee Gees</td>
</tr>
<tr>
<td>Romanza</td>
<td>Andrea Bocelli</td>
</tr>
<tr>
<td>Black Angel</td>
<td>Savage Rose</td>
</tr>
<tr>
<td>1999 Grammy Nominees</td>
<td>Many</td>
</tr>
</table>
<p><a target="_blank" href="cdcatalog.xml">View the XML file</a>,
<a target="_blank" href="cdcatalog_if.xsl">View the XSL file</a>, and
<a target="_blank" href="cdcatalog_if.xml">View the result</a></p>
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