XSLT <if>
A tag <xsl: if> especifica um teste condicional em relação ao conteúdo dos nós.
Declaração
A seguir está a declaração de sintaxe de <xsl:if> elemento.
<xsl:if
test = boolean-expression >
</xsl:if>
Atributos
Sr. Não | Nome e Descrição |
---|---|
1 | test A condição nos dados xml a serem testados. |
Elements
Número de ocorrências | Ilimitado |
---|---|
Parent elements |
xsl: attribute, xsl: comment, xsl: copy, xsl: element, xsl: fallback, xsl: for-each, xsl: if, xsl: message, xsl: else, xsl: param, xsl: processing-instrução, xsl: template, xsl: variable, xsl: when, xsl: with-param, elementos de saída |
Child elements |
xsl: apply-templates, xsl: attribute, xsl: call-template, xsl: choose, xsl: comment, xsl: copy, xsl: copy-of, xsl: element, xsl: for-each, xsl: if, xsl: instrução de processamento, xsl: texto, xsl: valor de, xsl: variável, elementos de saída |
Exemplo de demonstração
Este exemplo cria uma tabela do elemento <student> com seu atributo rollnoe seu filho <firstname>, <lastname>, <nickname> e <marks> iterando sobre cada aluno. Ele verifica as marcas para ser maior que 90 e, em seguida, imprime os detalhes do aluno.
students.xml
<?xml version = "1.0"?>
<?xml-stylesheet type = "text/xsl" href = "students.xsl"?>
<class>
<student rollno = "393">
<firstname>Dinkar</firstname>
<lastname>Kad</lastname>
<nickname>Dinkar</nickname>
<marks>85</marks>
</student>
<student rollno = "493">
<firstname>Vaneet</firstname>
<lastname>Gupta</lastname>
<nickname>Vinni</nickname>
<marks>95</marks>
</student>
<student rollno = "593">
<firstname>Jasvir</firstname>
<lastname>Singh</lastname>
<nickname>Jazz</nickname>
<marks>90</marks>
</student>
</class>
students.xsl
<?xml version = "1.0" encoding = "UTF-8"?>
<xsl:stylesheet version = "1.0"
xmlns:xsl = "http://www.w3.org/1999/XSL/Transform">
<xsl:template match = "/">
<html>
<body>
<h2>Students</h2>
<table border = "1">
<tr bgcolor = "#9acd32">
<th>Roll No</th>
<th>First Name</th>
<th>Last Name</th>
<th>Nick Name</th>
<th>Marks</th>
</tr>
<xsl:for-each select = "class/student">
<xsl:if test = "marks > 90">
<tr>
<td><xsl:value-of select = "@rollno"/></td>
<td><xsl:value-of select = "firstname"/></td>
<td><xsl:value-of select = "lastname"/></td>
<td><xsl:value-of select = "nickname"/></td>
<td><xsl:value-of select = "marks"/></td>
</tr>
</xsl:if>
</xsl:for-each>
</table>
</body>
</html>
</xsl:template>
</xsl:stylesheet>