XML Tutorial/XSLT stylesheet/value of

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output an element only if it has a value.

File: Data.xml
<?xml version="1.0" encoding="utf-8"?>
<table>
  <element> element 1 </element>
  <element> element 2 </element>
  <element/>
  <element/>
  <element> element           3</element>
</table>
File: Transform.xslt
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet
      version="1.0"
      xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:template match="table">
      <TABLE BORDER="1">
        <xsl:for-each select="element">
          <xsl:apply-templates select="."/>
        </xsl:for-each>
      </TABLE>
    </xsl:template>
    <xsl:template match="element">
      <xsl:variable name="tmp">
        <xsl:value-of select="."/>
      </xsl:variable>
      <xsl:if test="boolean(normalize-space($tmp))">
        <TR>
          <TD>
            <xsl:value-of select="$tmp"/>
          </TD>
        </TR>
      </xsl:if>
    </xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?><TABLE BORDER="1"><TR><TD> element 1 </TD></TR><TR><TD> element 2 </TD></TR><TR><TD> element           3</TD></TR></TABLE>


Select value from an element

File: Data.xml
<?xml version = "1.0"?>
<product>
      <subject>
         Visual C++ 
      </subject>
      <subject>C How to Program</subject>
  
</product>
File: Transform.xslt
<?xml version = "1.0"?>
<xsl:stylesheet version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:template match="/product">
    <em>
      <xsl:value-of select="subject" />
    </em>
  </xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?><em>
         Visual C++ 
      </em>


the output without empty elements removal

File: Data.xml
<?xml version="1.0" encoding="utf-8"?>
<table>
  <element> element 1 </element>
  <element> element 2 </element>
  <element/>
  <element/>
  <element> element           3</element>
</table>
File: Transform.xslt
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet
      version="1.0"
      xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:template match="table">
      <TABLE BORDER="1">
        <xsl:for-each select="element">
          <xsl:apply-templates select="."/>
        </xsl:for-each>
      </TABLE>
    </xsl:template>
    <xsl:template match="element">
      <TR>
        <TD>
          <xsl:value-of select="."/>
        </TD>
      </TR>
    </xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?><TABLE BORDER="1"><TR><TD> element 1 </TD></TR><TR><TD> element 2 </TD></TR><TR><TD/></TR><TR><TD/></TR><TR><TD> element           3</TD></TR></TABLE>


Use value-of to get element value from different level

File: Data.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="Transform.xslt"?>
<BOOK>
   <TITLE>Jack</TITLE>
   <AUTHOR>
      <FIRSTNAME>Jack</FIRSTNAME>
      <LASTNAME>Smith</LASTNAME>
   </AUTHOR>
   <BINDING>hardcover</BINDING>
   <PAGES>724</PAGES>
   <PRICE>$9.95</PRICE>
</BOOK>
File: Transform.xslt
<?xml version="1.0"?>
<xsl:stylesheet
   version="1.0" 
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
   <xsl:template match="/">  <!-- match the XSLT root node -->
      <HTML>
      <HEAD>
         <TITLE>Book Description</TITLE>
      </HEAD>
      <BODY>
      <H2>Book Description</H2>
      <SPAN STYLE="font-style:italic">Author: </SPAN>
      <xsl:value-of select="BOOK/AUTHOR"/><BR/>
      <SPAN STYLE="font-style:italic">Title: </SPAN>
      <xsl:value-of select="BOOK/TITLE"/><BR/>
      <SPAN STYLE="font-style:italic">Price: </SPAN>
      <xsl:value-of select="BOOK/PRICE"/><BR/>
      <SPAN STYLE="font-style:italic">Binding type: </SPAN>
      <xsl:value-of select="BOOK/BINDING"/><BR/>
      <SPAN STYLE="font-style:italic">Number of pages: </SPAN>
      <xsl:value-of select="BOOK/PAGES"/>
      </BODY>
      </HTML>
   </xsl:template>
</xsl:stylesheet>
Output:
<HTML>
   <HEAD>
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      <TITLE>Book Description</TITLE>
   </HEAD>
   <BODY>
      <H2>Book Description</H2><SPAN STYLE="font-style:italic">Author: </SPAN>
      Jack
      Smith
      <BR><SPAN STYLE="font-style:italic">Title: </SPAN>Jack<BR><SPAN STYLE="font-style:italic">Price: </SPAN>$9.95<BR><SPAN STYLE="font-style:italic">Binding type: </SPAN>hardcover<BR><SPAN STYLE="font-style:italic">Number of pages: </SPAN>724
   </BODY>
</HTML>


value-of select="."

File: Data.xml
<?xml version="1.0"?>
<greeting>
  Hello, World!
</greeting>
File: Transform.xslt

<xsl:stylesheet 
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
  version="1.0">
  <xsl:output method="html"/>
  <xsl:template match="/">
    <xsl:apply-templates select="greeting"/>
  </xsl:template>
  
  <xsl:template match="greeting">
    <html>
      <body>
        <h1>
          <xsl:value-of select="."/>
        </h1>
      </body>
    </html>
  </xsl:template>
</xsl:stylesheet>
Output:
<html>
   <body>
      <h1>
         Hello, World!
         
      </h1>
   </body>
</html>


value-of select=cars/manufacturer/@name separator=,

File: Data.xml
<?xml version="1.0" encoding="utf-8"?>
<cars>
  <manufacturer name="Chevrolet">
    <car>Cavalier</car>
    <car>Corvette</car>
    <car>Impala</car>
    <car>Malibu</car>
  </manufacturer>
</cars>
File: Transform.xslt
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="2.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="text"/>
  <xsl:template match="/">
    <xsl:value-of select="cars/manufacturer/@name" separator=", "/>
  </xsl:template>
</xsl:stylesheet>
Output:
Chevrolet


value-of select=format-date($date, [M01]/[D01]/[Y0001])

File: Transform.xslt
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="2.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xsl:output method="text"/>
  <xsl:template match="/">
    <xsl:call-template name="date-formatter">
      <xsl:with-param name="date" select="current-date()"/>
    </xsl:call-template>
  </xsl:template>
  <xsl:template name="date-formatter">
    <xsl:param name="date" as="xs:date" required="yes"/>
    <xsl:value-of select="format-date($date, "[M01]/[D01]/[Y0001]")"/>
  </xsl:template>
</xsl:stylesheet>
Output:
12/11/2008


value-of select=replace($sub2, ', '')

File: Data.xml
<?xml version="1.0" encoding="utf-8"?>
<ul>
  <li>T</li>
  <li>S</li>
  <li>W</li>
</ul>
File: Transform.xslt
<?xml version="1.0"?>
<xsl:stylesheet version="2.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="text"/>
  <xsl:template match="/">
    <xsl:apply-templates select="ul/li"/>
  </xsl:template>
  <xsl:template match="li">
    <xsl:variable name="sub1" select="replace(., "&amp;", "^&amp;")"/>
    <xsl:variable name="sub2" select="replace($sub1, "\|", "^|")"/>
    <xsl:value-of select="replace($sub2, "&apos;", "&apos;&apos;")"/>
    <xsl:text>&#xA;</xsl:text>
  </xsl:template>
</xsl:stylesheet>
Output:
T
S
W
Источник — «http://wbex.ru/index.php?title=XML_Tutorial/XSLT_stylesheet/value_of&oldid=10777»