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函数 sum() 对所有选中的节点求和。 XSLT stylesheet 1 全部相加， XSLT stylesheet 2 只加奇数节点。

XSLT stylesheet 1

XML源码
<source>

<number>1</number>
<number>3</number>
<number>4</number>
<number>17</number>
<number>8</number>
<number>11</number>

</source>

输出
1 + 3 + 4 + 17 + 8 + 11 = 44

用HTML察看
1 + 3 + 4 + 17 + 8 + 11 = 44
XSLT stylesheet
<xsl:stylesheet version = '1.0'
     xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>

<xsl:template match="/">
     <xsl:for-each select="//number">
          <xsl:value-of select="."/>
          <xsl:choose>
               <xsl:when test="position()=last()">
                    <xsl:text> = </xsl:text>
               </xsl:when>
               <xsl:otherwise>
                    <xsl:text> + </xsl:text>
               </xsl:otherwise>
          </xsl:choose>
     </xsl:for-each>
     <xsl:value-of select="sum(//number)"/>
</xsl:template>


</xsl:stylesheet>


XSLT stylesheet 2

XML源码
<source>

<number>1</number>
<number>3</number>
<number>4</number>
<number>17</number>
<number>8</number>
<number>11</number>

</source>

输出
1 + 3 + 17 + 11 = 32

用HTML察看
1 + 3 + 17 + 11 = 32
XSLT stylesheet
<xsl:stylesheet version = '1.0'
     xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>

<xsl:template match="/">
     <xsl:for-each select="//number[text() mod 2 = 1]">
          <xsl:value-of select="."/>
          <xsl:choose>
               <xsl:when test="position()=last()">
                    <xsl:text> = </xsl:text>
               </xsl:when>
               <xsl:otherwise>
                    <xsl:text> + </xsl:text>
               </xsl:otherwise>
          </xsl:choose>
     </xsl:for-each>
     <xsl:value-of select="sum(//number[text() mod 2 = 1])"/>
</xsl:template>


</xsl:stylesheet>