XSLT elemento disponível () função
XSLT Função objetos referência completa Definição e Uso
elemento-disponíveis () devolve um valor booleano que indica se o processador XSLT suporta os elementos especificados.
A função só pode ser utilizado para testar os elementos do corpo modelo está localizado. Esses elementos são:
- xsl: apply-importações
- xsl: apply-templates
- xsl: atributos
- 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: instrução de processamento
- xsl: text
- xsl: value-of
- xsl: variable
gramática
boolean element-available(string)
parâmetros
| 参数 | 描述 |
|---|---|
| string | 必需。规定要测试的元素。 |
exemplo 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>
Veja arquivo XSL , ver os resultados .
XSLT Função objetos referência completa