XSLT Element

XSLT <xsl:key> Element

The XSLT element is used to specify a named name-value pair assigned to a specific element in an XML document. This key is used with the key() function in XPath expressions to access the assigned elements in an XML document.

Parameter explanation

Index	Name	Description
1)	Name	It specifies the name of the key to be used.
2)	Match	It specifies that the pattern must be matched to a node that holds this key.
3)	Use	It specifies XPath expression to identify the value of the nodes of xml document.

XSLT <xsl:key> Element Example

Let’s take an example to create a table of <employee> element with its attribute “id”and its child <firstname>, <lastname>, <nickname>, and <salary> by iterating over each employee. This example checks key as firstname to be one of the employee’s name and then prints the employee’s 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>60000</salary>    </employee>     <employee id = “024”>        <firstname>Sonam</firstname>        <lastname>Gupta</lastname>        <nickname>Vinni</nickname>        <salary>45000</salary>    </employee>     <employee id = “056”>        <firstname>Peter</firstname>        <lastname>Symon</lastname>        <nickname>John</nickname>        <salary>20000</salary>     </employee>  </class> 

Employee.xsl

 <xsl:stylesheet version = “1.0”     xmlns:xsl = “http://www.w3.org/1999/XSL/Transform”>     <xsl:key name = “firstname-search” match = “employee” use = “firstname”/>      <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>                  </tr>>                        <xsl:for-each select = “key(‘firstname-search’, ‘Sonam’)”>                          <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>                     </tr>                        </xsl:for-each>               </table>           </body>         </html>      </xsl:template>    </xsl:stylesheet>  

Output:

XSLT Xsl key element 1

Next TopicXSLT <message>

XSLT Element

XSLT <xsl:key> Element

Parameter explanation

XSLT <xsl:key> Element Example

HTML vs XML

YII Upgradation

You may also like