使用 Wendell Piez 方法：
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="html"/>
<xsl:template match="/">
<xsl:variable name="vMonths">
<xsl:text>1 - January|2 - February|3 - March|</xsl:text>
<xsl:text>4 - April|5 - May|6 - June|</xsl:text>
<xsl:text>7 - July|8 - August|9 - September|</xsl:text>
<xsl:text>10 - October|11 - November|12 - December|</xsl:text>
</xsl:variable>
<select id="card-expires-month" name="fields[card-expires-month]">
<xsl:for-each select="(//node())[12 >= position()]">
<option value="{position()}">
<xsl:if test="//data
/events
/deposit
/post-values
/card-expires-month
= position()">
<xsl:attribute name="selected">selected</xsl:attribute>
</xsl:if>
<xsl:value-of select="concat(
position(),
substring-before(
substring-after(
$vMonths,
position()
),
'|'
)
)"/>
</option>
</xsl:for-each>
</select>
</xsl:template>
</xsl:stylesheet>
注意：$vMonths声明只是考虑可读性
使用普通递归：
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="html"/>
<xsl:template match="/">
<select id="card-expires-month" name="fields[card-expires-month]">
<xsl:call-template name="tokenize"/>
</select>
</xsl:template>
<xsl:template name="tokenize">
<xsl:param name="pString">
<xsl:text>January|February|March|April|</xsl:text>
<xsl:text>May|June|July|August|</xsl:text>
<xsl:text>September|October|November|December</xsl:text>
</xsl:param>
<xsl:param name="pPosition" select="1"/>
<xsl:choose>
<xsl:when test="$pString=''"/>
<xsl:when test="contains($pString,'|')">
<xsl:call-template name="tokenize">
<xsl:with-param name="pString"
select="substring-before($pString,'|')"/>
<xsl:with-param name="pPosition" select="$pPosition"/>
</xsl:call-template>
<xsl:call-template name="tokenize">
<xsl:with-param name="pString"
select="substring-after($pString,'|')"/>
<xsl:with-param name="pPosition" select="$pPosition + 1"/>
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<option value="{$pPosition}">
<xsl:if test="//data
/events
/deposit
/post-values
/card-expires-month
= $pPosition">
<xsl:attribute name="selected">selected</xsl:attribute>
</xsl:if>
<xsl:value-of select="concat($pPosition,' - ',$pString)"/>
</option>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
两个输出：
<select id="card-expires-month" name="fields[card-expires-month]">
<option value="1">1 - January</option>
<option value="2">2 - February</option>
<option value="3">3 - March</option>
<option value="4">4 - April</option>
<option value="5">5 - May</option>
<option value="6">6 - June</option>
<option value="7">7 - July</option>
<option value="8">8 - August</option>
<option value="9">9 - September</option>
<option value="10">10 - October</option>
<option value="11">11 - November</option>
<option value="12">12 - December</option>
</select>
编辑：至于@Flack 的评论，内联或外部源的经典答案：
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:m="month"
exclude-result-prefixes="m">
<xsl:output method="html"/>
<m:m>January</m:m>
<m:m>February</m:m>
<m:m>March</m:m>
<m:m>April</m:m>
<m:m>May</m:m>
<m:m>June</m:m>
<m:m>July</m:m>
<m:m>August</m:m>
<m:m>September</m:m>
<m:m>October</m:m>
<m:m>November</m:m>
<m:m>December</m:m>
<xsl:template match="/">
<xsl:variable name="vSelected"
select="//data/events/deposit/post-values/card-expires-month"/>
<select id="card-expires-month" name="fields[card-expires-month]">
<xsl:for-each select="document('')/*/m:m">
<option value="{position()}">
<xsl:if test="$vSelected = position()">
<xsl:attribute name="selected">selected</xsl:attribute>
</xsl:if>
<xsl:value-of select="concat(position(),' - ',.)"/>
</option>
</xsl:for-each>
</select>
</xsl:template>
</xsl:stylesheet>