Previous | Next | Indexes
adultinternetusers > Tutorials > XSLT 2.0 Tutorial > Variables and Parameters (6/14) >

Shadowing local variables

Value of a variable cannot be changed it can be only shadowed. The difference can be seen in the example. The second declaration of the variable "xxx" shadows the first one. The element ii is in scope of both the first and the second declaration and so the second one is used, the element yyy is only in scope of the second declaration.

This fact can cause problems for people used to other programming languages a rather surprising are demonstrated inside element zzz.

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:template  match="/aaa">
                  <xsl:variable  name="xxx">1</xsl:variable>
                  <xxx>
                        <i>
                              <xsl:value-of  select="$xxx"/>
                        </i>
                        <xsl:variable  name="xxx"
                                    select="$xxx + 5"/>
                        <ii>
                              <xsl:value-of  select="$xxx"/>
                        </ii>
                  </xxx>
                  <yyy>
                        <xsl:value-of  select="$xxx"/>
                  </yyy>
                  <zzz>
                        <xsl:variable  name="i"
                                    select="1"/>
                        <xsl:for-each  select="1 to 5">
                              <xsl:variable  name="i"
                                          select="$i+1"/>
                              <j>
                                    <xsl:value-of  select="$i"/>
                              </j>
                        </xsl:for-each>
                        <jjj>
                              <xsl:value-of  select="$i"/>
                        </jjj>
                  </zzz>
            </xsl:template>

      </xsl:stylesheet>
XML

      <aaa>
            <bbb/>
            <bbb/>
            <bbb/>
      </aaa>
Output

      <xxx>
            <i>1</i>
            <ii>6</ii>
      </xxx>
      <yyy>1</yyy>
      <zzz>
            <j>2</j>
            <j>2</j>
            <j>2</j>
            <j>2</j>
            <j>2</j>
            <jjj>1</jjj>
      </zzz>


Previous chapter: Named-Templates
Next chapter: Stylesheet Functions
Previous page: Variable shadowing
Next page: Nodes as variable values

Kevin Carr in Stanton

Natural Skin Care and European Soaps
TickTalk 5
city of stanton
internetusers


You can also get Organic Skin Care products from Bliss Bath Body and you must check out their Natural Body Lotions and bath soaps

Now if you are looking for the best deals on surf clothing from Quiksilver and Roxy then you have to check these amazing deals here: 

Hey, check out this Organic Skin Care European Soaps along with Natural Lavender Body Lotion and shea butter

and we can get surf t shirts surfing shirt and And you must check out this website swim suit swimming suit and swim trunks ing suit and swim trunks