XPath - Attribute Node

This attribute can be easily retrieved and checked by using the @attribute-name of the element.
@name − get the value of attribute "name".
<td><xsl:value-of select = "@rollno"/></td>
Attribute can be used to compared using operators.
@rollno = 493 − get the text value of attribute "rollno" and compare with a value.
<xsl:if test = "@rollno = 493">
In this example, we've created a sample XML document students.xml and its stylesheet document students.xsl which uses the XPath expressions.
Following is the sample XML used.
<?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>
<?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>
            <h3>Details of each Students. Xpath expression = "/class/student"</h3>
				
            <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">
                  <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:for-each>
            </table> 
				
            <h3>Details of Student whose roll no is 493. Xpath expression = "@rollno = 493"</h3>
				
            <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 = "//student">
					
                  <xsl:if test = "@rollno = 493">
                     <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>

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