XSLT <xsl:choose> Element

The XSLT <xsl:choose> element is used to specify a multiple conditional test against the content of nodes with the <xsl:otherwise> and <xsl:when> elements.

<xsl:choose>
  <xsl:when test="expression">
    ... some output ...
  </xsl:when>
  <xsl:otherwise>
    ... some output ....
  </xsl:otherwise>
</xsl:choose>

Parameter explanation

test: It specifies a condition in xml data to test.

XSLT <xsl:choose> Element Example

Let's take an example to create a table ofelement with its attribute "id" and its child <firstname>, <lastname>, <nickname>, and <salary> by iterating over each employee. It checks the salary and then prints the grade details.

Employee.xml

<?xml version = "1.0"?>
<?xml-stylesheet type = "text/xsl" href = "employee.xsl"?> 
<class> 
   <employee id = "001">
      <firstname>Aryan</firstname> 
      <lastname>Gupta</lastname> 
      <nickname>Raju</nickname> 
      <salary>30000</salary>
   </employee> 
   <employee id = "024"> 
      <firstname>Sara</firstname> 
      <lastname>Khan</lastname> 
      <nickname>Zoya</nickname> 
      <salary>25000</salary>
   </employee> 
   <employee id = "056"> 
      <firstname>Peter</firstname> 
      <lastname>Symon</lastname> 
      <nickname>John</nickname> 
      <salary>10000</salary> 
   </employee> 
</class>

Employee.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>Employee</h2> 
            <table border = "1"> 
               <tr bgcolor = "pink"> 
                  <th>ID</th> 
                  <th>First Name</th> 
                  <th>Last Name</th> 
                  <th>Nick Name</th> 
                  <th>Salary</th> 
                  <th>Grade</th> 
               </tr> 
     
               <xsl:for-each select = "class/employee"> 
     
                  <tr> 
                     <td><xsl:value-of select = "@id"/></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 = "salary"/></td> 
       
                     <td> 
                        <xsl:choose> 
                           <xsl:when test = "salary > 50000"> 
                              High 
                           </xsl:when> 
         
                           <xsl:when test = "salary > 40000"> 
                              Medium 
                           </xsl:when> 
         
                           <xsl:otherwise> 
                              Low 
                           </xsl:otherwise> 
                        </xsl:choose> 
                     </td> 
                  </tr> 
               </xsl:for-each> 
            </table> 
         </body> 
      </html> 
   </xsl:template>  
</xsl:stylesheet>

Output: