<xsl:choose> |
<xsl:when test="expression"> |
... some output ... |
</xsl:when> |
<xsl:otherwise> |
... some output .... |
</xsl:otherwise> |
</xsl:choose> |
如需插入针对 XML 文件的多重条件测试,请向 XSL 文件添加 <xsl:choose>、<xsl:when> 以及 <xsl:otherwise> 元素:
<?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 > 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> |
这是另外一个包含两个 <xsl:when> 元素的实例:
<?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 > 10"> |
<td bgcolor="#ff00ff"> |
<xsl:value-of select="artist"/></td> |
</xsl:when> |
<xsl:when test="price > 9"> |
<td bgcolor="#cccccc"> |
<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> |