[xsl] Test for presence of attribute

Subject: [xsl] Test for presence of attribute
From: Nathan Shaw <n8_shaw@xxxxxxxxx>
Date: Wed, 18 Jul 2001 09:13:42 -0700 (PDT)
(I am a digester, so please reply off-list to
n8_shaw@xxxxxxxxx and cc the list if you feel others
may learn too =:>)

Is there anyway in XSL to check for the existance of
an attribute? I am currently using:

<xsl:if test="@URL != ''"><a
href="{@URL}"><xsl:value-of select="@Title"
/></a></xsl:if><xsl:if test="@URL = ''"><xsl:value-of
select="@Title" /></xsl:if>

BUT, URL is not required and if it is not present,
then the IF statement fails. I need something like
IsDefined() or AttributeExists()...

Also, is there a len() function? I would rather use
something like <xsl:if test="len(@URL)">...



Nathan Shaw
Web Applications Developer

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