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<h1>XSLT <xsl:choose> Element</h1>
<hr />
<a href="xsl_w3celementref.asp"><img class="navup" src="../images/up.gif" alt="XSLT Element Reference" border="0" /> Complete XSLT Element Reference</a>
<hr />
<h2>Definition and Usage</h2>
<p>The <xsl:choose> element is used in conjunction with <xsl:when> and <xsl:otherwise>
to express multiple conditional tests.</p>
<p>If no <xsl:when> is true, the content of <xsl:otherwise> is processed.</p>
<p>If no <xsl:when> is true, and no <xsl:otherwise> element is present, nothing is created.</p>
<p><b>Tip:</b> For simple conditional testing, use the <xsl:if> element instead.</p>
<hr />
<h2>Syntax</h2>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
<tr>
<td valign="top">
<pre><xsl:choose></pre>
<pre><!-- Content:(xsl:when+,xsl:otherwise?) --></pre>
<pre></xsl:choose></pre>
</td>
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</table>
<h2>Attributes</h2>
<p>None</p>
<h3>Example 1</h3>
<p>The code below will add a pink background-color to the artist column WHEN the
price of the CD is higher than 10.</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"></pre>
<pre><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">
<tr>
<td><xsl:value-of select="title"/></td>
<xsl:choose>
<xsl:when test="price &gt; 10">
<td bgcolor="#ff00ff">
<xsl:value-of select="artist"/></td>
</xsl:when>
<xsl:otherwise>
<td><xsl:value-of select="artist"/></td>
</xsl:otherwise>
</xsl:choose>
</tr>
</xsl:for-each>
</table>
</body>
</html>
</xsl:template></pre>
<pre></xsl:stylesheet></pre>
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<p><a target="_blank" href="cdcatalog.xml">View the XML file</a>,
<a target="_blank" href="cdcatalog_choose.xsl">View the XSL file</a>, and
<a target="_blank" href="cdcatalog_choose.xml">View the result</a>.</p>
<h3>Example 2</h3>
<p>Declare a variable named "color". Set its value to
the color attribute of the current element. If the current element has no
color attribute, the value of "color" will be "green":
</p>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
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<td valign="top">
<pre><xsl:variable name="color">
<xsl:choose>
<xsl:when test="@color">
<xsl:value-of select="@color"/>
</xsl:when>
<xsl:otherwise>green</xsl:otherwise>
</xsl:choose>
</xsl:variable></pre>
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<a href="xsl_w3celementref.asp"><img class="navup" src="../images/up.gif" alt="XSLT Element Reference" border="0" /> Complete XSLT Element Reference</a>
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