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    copied!<p><strong>The problem is that the provided XSLT code has a default namespace.</strong></p> <p>Therefore, the <code>&lt;firstname&gt;</code> , <code>&lt;lastname&gt;</code> and <code>&lt;email&gt;</code> elements are in the xhtml namespace. But <code>email</code> is referenced without any prefix in:</p> <blockquote> <pre><code>exsl:node-set($person)/email </code></pre> </blockquote> <p>XPath considers all unprefixed names to be in "no namespace". It tries to find a child of <code>exsl:node-set($person)</code> called <code>email</code> that is in "no namespace" and this is unsuccessful, because its <code>email</code> child is in the xhtml namespace. Thus no <code>email</code> node is selected and output.</p> <p><strong>Solution</strong>:</p> <p>This transformation:</p> <pre><code>&lt;xsl:stylesheet version="1.0" xmlns="http://www.w3.org/1999/xhtml" xmlns:x="http://www.w3.org/1999/xhtml" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:exsl="http://exslt.org/common" exclude-result-prefixes="exsl x"&gt; &lt;xsl:output omit-xml-declaration="yes" indent="yes"/&gt; &lt;xsl:template match="/"&gt; &lt;html&gt; &lt;p&gt;Hello world&lt;/p&gt; &lt;xsl:variable name="person"&gt; &lt;firstname&gt;Foo&lt;/firstname&gt; &lt;lastname&gt;Bar&lt;/lastname&gt; &lt;email&gt;test@example.com&lt;/email&gt; &lt;/xsl:variable&gt; &lt;xsl:text&gt;&amp;#xA;&lt;/xsl:text&gt; &lt;xsl:value-of select="exsl:node-set($person)/x:email"/&gt; &lt;xsl:text&gt;&amp;#xA;&lt;/xsl:text&gt; &lt;/html&gt; &lt;/xsl:template&gt; &lt;/xsl:stylesheet&gt; </code></pre> <p><strong>when applied on any XML document (not used), produces the wanted result</strong>:</p> <pre><code>&lt;html xmlns="http://www.w3.org/1999/xhtml" xmlns:x="http://www.w3.org/1999/xhtml"&gt; &lt;p&gt;Hello world&lt;/p&gt; test@example.com &lt;/html&gt; </code></pre> <p><strong>Do note</strong>:</p> <ol> <li><p>The added namespace definition with prefix <code>x</code></p></li> <li><p>The changed <code>select</code> attribute of <code>&lt;xsl:value-of&gt;</code>: </p></li> </ol> <p><code>exsl:node-set($person)/x:email</code></p>
 

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