XSLT <xsl:value-of>-Element
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<xsl:value-of> 元素用于提取某个选定节点的值。
<xsl:value-of> 元素
<xsl:value-of> 元素用于提取某个选定节点的值，并将值添加到转换的输出流中：
<?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>
<tr>
<td><xsl:value-of select="catalog/cd/title"/></td>
<td><xsl:value-of select="catalog/cd/artist"/></td>
</tr>
</table>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
注释：选择 属性的值是一个 XPath 表达式。此表达式的工作方式类似于定位某个文件系统，在其中正斜杠可选择子目录。
上面的转换结果类似于这样：
View this XML file,View this XSL file,and view the result.
The result of this example has a slight defect: only one line of data from the XML document is copied to the output result.
In the following chapters, you will learn how to use <xsl:for-each> The element is used to iterate over XML elements and display all records.
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