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XSLT <xsl:choose> Element

XSLT Element Reference Complete XSLT Element Reference

Definition and Usage

The <xsl:choose> element is used in conjunction with <xsl:when> and <xsl:otherwise> to express multiple conditional tests.

If no <xsl:when> is true, the content of <xsl:otherwise> is processed.

If no <xsl:when> is true, and no <xsl:otherwise> element is present, nothing is created.

Tip: For simple conditional testing, use the <xsl:if> element instead.

Syntax

<xsl:choose>
<!-- Content:(xsl:when+,xsl:otherwise?) -->
</xsl:choose>

Attributes

None

Example 1

The code below will add a pink background-color to the artist column WHEN the price of the CD is higher than 10.

<?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">
      <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>
</xsl:stylesheet>

View the XML file, View the XSL file, and View the result.

Example 2

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": 

<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>

XSLT Element Reference Complete XSLT Element Reference

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