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XSLT xsl:for-each Element

The <xsl:for-each> element allows you to do looping in XSLT.


The <xsl:for-each> Element

The XSL <xsl:for-each> element can be used to select every XML element of a specified node-set:

<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
  <html>
  <body>
    <h2>My CD Collection</h2>
    <table border="1">
      <tr bgcolor="#9acd32">
        <th>Title</th>
        <th>Artist</th>
      </tr>
      <xsl:for-each select="catalog/cd">
      <tr>
        <td><xsl:value-of select="title"/></td>
        <td><xsl:value-of select="artist"/></td>
      </tr>
      </xsl:for-each>
    </table>
  </body>
  </html>
</xsl:template>
</xsl:stylesheet>

Note: The value of the select attribute is an XPath expression. An XPath expression works like navigating a file system; where a forward slash (/) selects subdirectories.

The result of the transformation above will look like this:

My CD Collection

Title Artist
Empire Burlesque Bob Dylan
Hide your heart Bonnie Tyler
Greatest Hits Dolly Parton
Still got the blues Gary More
Eros Eros Ramazzotti
One night only Bee Gees
Sylvias Mother Dr.Hook
Maggie May Rod Stewart
Romanza Andrea Bocelli
When a man loves a woman Percy Sledge
Black angel Savage Rose
1999 Grammy Nominees Many
For the good times Kenny Rogers
Big Willie style Will Smith
Tupelo Honey Van Morrison
Soulsville Jorn Hoel
The very best of Cat Stevens
Stop Sam Brown
Bridge of Spies T`Pau
Private Dancer Tina Turner
Midt om natten Kim Larsen
Pavarotti Gala Concert Luciano Pavarotti
The dock of the bay Otis Redding
Picture book Simply Red
Red The Communards
Unchain my heart Joe Cocker

View the XML file, View the XSL file, and View the result


Filtering the Output

We can also filter the output from the XML file by adding a criterion to the select attribute in the <xsl:for-each> element.

<xsl:for-each select=”catalog/cd[artist=’Bob Dylan’]”>

Legal filter operators are:

  • =  (equal)
  • != (not equal)
  • &lt; less than
  • &gt; greater than

Take a look at the adjusted XSL style sheet:

<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
 <html>
  <body>
  <h2>My CD Collection</h2>
  <table border="1">
   <tr bgcolor="#9acd32">
      <th>Title</th>
      <th>Artist</th>
   </tr>
   <xsl:for-each select="catalog/cd[artist='Bob Dylan']">
   <tr>
      <td><xsl:value-of select="title"/></td>
      <td><xsl:value-of select="artist"/></td>
   </tr>
   </xsl:for-each>
  </table>
 </body>
 </html>
</xsl:template>
</xsl:stylesheet>

The result of the transformation above will look like this:

My CD Collection

Title Artist
Empire Burlesque Bob Dylan

View the XML file, View the XSL file, View the result

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