< xsl:if>tag指定针对节点内容的条件测试.
以下是< xsl:if>
<xsl:if test = boolean-expression > </xsl:if>
| Sr.No | 姓名&描述 |
|---|---|
| 1 | test 要测试的xml数据中的条件. |
| 发生次数 | 无限 |
|---|---|
父元素 | xsl:attribute，xsl :comment，xsl:copy，xsl:element，xsl:fallback，xsl:for-each，xsl:if，xsl:message，xsl:otherwise，xsl:param，xsl:processing-instruction，xsl:template，xsl:variable ，xsl:when，xsl:with-param，output elements |
子元素 | xsl:apply-templates，xsl: attribute，xsl:call-template，xsl:choose，xsl:comment，xsl:copy，xsl:copy-of，xsl:element，xsl:for-each，xsl:if，x sl:processing-instruction，xsl:text，xsl:value-of，xsl:variable，output elements |
此示例创建一个< student>的表格元素及其属性 rollno 及其子元素< firstname>，< lastname>，< nickname>和< marks>通过迭代每个学生.它会检查标记是否大于90，然后打印学生的详细信息.
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>
