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Variable shadowing

Global variable can be shadowed by a local one. It means that if local variable has the same name as a global one, the value of the local one is used.

XSLT

      <xsl:stylesheet
                  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                  version="2.0">
            <xsl:output  method="xml"
                        indent="yes"
                        omit-xml-declaration="yes"/>
            <xsl:variable  name="xxx">xxx-global</xsl:variable>
            <xsl:variable  name="yyy">yyy-global</xsl:variable>

            <xsl:template  match="/aaa">
                  <xsl:variable  name="xxx">xxx-local</xsl:variable>
                  <xsl:variable  name="zzz">zzz-local</xsl:variable>
                  <i>
                        <xsl:value-of  select="$xxx"/>
                  </i>
                  <ii>
                        <xsl:value-of  select="$yyy"/>
                  </ii>
                  <iii>
                        <xsl:value-of  select="$zzz"/>
                  </iii>
            </xsl:template>

      </xsl:stylesheet>
XML

      <aaa/>
Output

      <i>xxx-local</i>
      <ii>yyy-global</ii>
      <iii>zzz-local</iii>


Previous chapter: Named-Templates
Next chapter: Stylesheet Functions
Previous page: Problems with scope of variables
Next page: Shadowing local variables

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