Definition and Usage
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The <xsl:value-of> element extracts the value of a selected node.
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The <xsl:value-of> element can be used to select the value of an XML element and add it to the output.
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Note: The value of the required select attribute contains an XPath expression. It works like navigating a file system where a forward slash (/) selects subdirectories.
×¢Ò⣺±ØÒªµÄselect[Ñ¡Ôñ]ÊôÐÔÖµ°üº¬ÁËÒ»¸öXPath±í´ïʽ¡£ËüµÄÔËÐз½Ê½Èçͬһ¸öÎļþ²Ù×÷ϵͳ£¬¸ÃϵͳÄÚͨ¹ýÔÚÇ°Ãæ¼ÓÉÏб¸Ü£¨/£©À´Ñ¡Ôñ×ÓĿ¼¡£
Syntax
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<xsl:value-of select="expression" disable-output-escaping="yes|no"/> |
Attributes
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| ÊôÐÔ | Öµ |
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|---|---|---|
| select | expression | Required. An XPath expression that specifies which node/attribute to extract the value from ±ØÒª²ÎÊý¡£Ö¸¶¨Ò»¸öXPath±í´ïʽ£¬¸Ã±í´ïʽÊÇÓÃÓÚÖ¸Ã÷´ÓÄĸö½Úµã/ÊôÐÔÖÐÌáÈ¡Öµ¡£ |
| disable-output-escaping | yes no |
Optional. "yes" indicates that special characters (like "<") should be output as is. "no" indicates that special characters (like "<") should be output as "<". Default is "no" ¿ÉÑ¡²ÎÊý¡£Èç¹ûÉèÖÃΪ"yes"£¬ÔòÖ¸¶¨Á˾ßÌå×Ö·û£¨È磺“<”£©ÒÔÆä±¾ÉíÐÎʽÊä³ö£»Èç¹ûÉèÖÃΪ"no"£¬ÔòÖ¸¶¨Á˾ßÌå×Ö·û£¨È磺“<”£©±ØÐë×÷Ϊ"<"Êä³ö¡£Ä¬ÈÏΪno |
Example 1
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<?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> |
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Example 2
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<?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>
<td><xsl:value-of select="artist"/></td>
</tr>
</xsl:for-each>
</table>
</body>
</html>
</xsl:template>
</xsl:stylesheet> |