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POXPath functions URL with fn prefix does not work
 

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    <p>Following XLST code works fine :-</p> <pre><code>&lt;?xml version="1.0"?&gt; &lt;xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"&gt; &lt;xsl:template match="/"&gt; &lt;xsl:for-each select="bookstore/book"&gt; &lt;xsl:if test="starts-with(author, 'W')"&gt; &lt;!-- Line 1 --&gt; &lt;xsl:value-of select="title" /&gt; &amp;#160; by &lt;xsl:value-of select="author" /&gt; &lt;br/&gt; &lt;/xsl:if&gt; &lt;/xsl:for-each&gt; &lt;/xsl:template&gt; &lt;/xsl:stylesheet&gt; </code></pre> <p>Here I am directly using <a href="http://www.w3schools.com/xsl/xsl_functions.asp#string" rel="nofollow">XPath String function</a> starts-with() in Line 1.</p> <p>Now, as per <a href="http://www.w3schools.com/xsl/xsl_functions.asp" rel="nofollow">W3Schools</a>, adding the namespace for XPath functions (<a href="http://www.w3.org/2005/xpath-functions" rel="nofollow">http://www.w3.org/2005/xpath-functions</a>), the following code does not work :-</p> <pre><code>&lt;?xml version="1.0"?&gt; &lt;xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fn="http://www.w3.org/2005/xpath-functions" version="1.0"&gt; &lt;xsl:template match="/"&gt; &lt;xsl:for-each select="bookstore/book"&gt; &lt;xsl:if test="fn:starts-with(author, 'W')"&gt; &lt;!-- Line 2 --&gt; &lt;xsl:value-of select="title" /&gt; &amp;#160; by &lt;xsl:value-of select="author" /&gt; &lt;br/&gt; &lt;/xsl:if&gt; &lt;/xsl:for-each&gt; &lt;/xsl:template&gt; &lt;/xsl:stylesheet&gt; </code></pre> <p>Here, I am using the XPath function with its prefix attached to the namespace. </p> <p>IE shows that "Error: Namespace '<a href="http://www.w3.org/2005/xpath-functions" rel="nofollow">http://www.w3.org/2005/xpath-functions</a>' does not contain any functions" I checked the URL and it does have functions.</p> <p>Where am I going wrong? And if I can use all XPath functions with Transform URL itself, then why is a separate URL for XPath functions is provided?</p>
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