not Function
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not Function

Returns true if the argument is false; otherwise false.

          boolean not(boolean)

In this example, the notexample.xsl stylesheet is applied to the books.xml document. For each book node, the value of the <price> element is evaluated. If it's not greater than 10, the value of the <title> element and the value of the <price> element are output to the browser.

XML File (books.xml)

<?xml version='1.0'?>
<?xml-stylesheet type="text/xsl" href="notexample.xsl"?>
   <book id="bk101">
      <author>Gambardella, Matthew</author>
      <title>XML Developer's Guide</title>
      <description>An in-depth look at creating applications with
   <book id="bk102">
      <author>Ralls, Kim</author>
      <title>Midnight Rain</title>
      <description>A former architect battles corporate zombies,
 an evil sorceress, and her own childhood to become queen of the world.</description>

XSLT File (notexample.xsl)

<?xml version='1.0'?>
<xsl:stylesheet version="1.0"

<xsl:template match="/">
   <xsl:for-each select="//book[not(price &gt; 10)]">
      <xsl:value-of select="title"/> -
      $<xsl:value-of select="price"/><br/>


Formatted Output

Midnight Rain - $5.95

Processor Output

<?xml version="1.0" encoding="UTF-16"?>Midnight Rain - $5.95<br />

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