XSLT element-available () function
Complete XSLT Function Reference objects Definition and Usage
element-available () function returns a Boolean value that indicates whether the XSLT processor supports the specified elements.
The function can only be used to test elements of the template body is located. These elements are:
- xsl: apply-imports
- xsl: apply-templates
- xsl: attributes
- xsl: call-template
- xsl: choose
- xsl: comment
- xsl: copy
- xsl: copy-of
- xsl: element
- xsl: fallback
- xsl: for-each
- xsl: if
- xsl: message
- xsl: number
- xsl: processing instruction
- xsl: text
- xsl: value-of
- xsl: variable
grammar
boolean element-available(string)
parameter
| 参数 | 描述 |
|---|---|
| string | 必需。规定要测试的元素。 |
Example 1
<?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>
<xsl:choose>
<xsl:when test="element-available('xsl:comment')">
<p>xsl:comment is supported.</p>
</xsl:when>
<xsl:otherwise>
<p>xsl:comment is not supported.</p>
</xsl:otherwise>
</xsl:choose>
<xsl:choose>
<xsl:when test="element-available('xsl:delete')">
<p>xsl:delete is supported.</p>
</xsl:when>
<xsl:otherwise>
<p>xsl:delete is not supported.</p>
</xsl:otherwise>
</xsl:choose>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<html>
<body>
<xsl:choose>
<xsl:when test="element-available('xsl:comment')">
<p>xsl:comment is supported.</p>
</xsl:when>
<xsl:otherwise>
<p>xsl:comment is not supported.</p>
</xsl:otherwise>
</xsl:choose>
<xsl:choose>
<xsl:when test="element-available('xsl:delete')">
<p>xsl:delete is supported.</p>
</xsl:when>
<xsl:otherwise>
<p>xsl:delete is not supported.</p>
</xsl:otherwise>
</xsl:choose>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
See XSL file , view the results .
Complete XSLT Function Reference objects