The <xsl:message> element writes a message to the output. This element is primarily used to report errors.
This element can contain almost any other XSL element (<xsl:text>, <xsl:value-of>, etc.).
The terminate attribute gives you the choice to either quit or continue the processing when an error occurs.
Syntax<xsl:message terminate="yes|no">
<!-- Content:template -->
</xsl:message>
Attributes Attribute Value Description terminate yesCheck if artist is an empty string. If yes, we quit the XSL processor and display a message:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<html>
<body>
<xsl:for-each select="catalog/cd">
<p>Title: <xsl:value-of select="title"/><br />
Artist:
<xsl:if test="artist=''">
<xsl:message terminate="yes">
Error: Artist is an empty string!
</xsl:message>
</xsl:if>
<xsl:value-of select="artist"/>
</p>
</xsl:for-each>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
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