Subject: RE: [xsl] possible value-of return values From: "alex reuter" <areuter@xxxxxxxxxxxxxxxx> Date: Tue, 31 Jul 2001 10:42:12 -0400 |
Thanks for all your help folks. I know this may not be the list for this question, but would anyone know how to programmatically test for the same set of conditions? Thanks. alex -----Original Message----- From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx]On Behalf Of Michael Kay Sent: Monday, July 30, 2001 6:42 PM To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx Subject: RE: [xsl] possible value-of return values > Given the following XML document: > <root> > <user name="Alex" password="Elephant" color=""/> > <user name="Reuter" password="Rhino"/> > </root> > I was wondering if anyone knew the distinction in return > values between: > <xsl:value-of select="/root/user[@name='Alex']/@color"/> > And > <xsl:value-of select="/root/user[@name='Reuter']/@color"/> > They are both empty strings. > My guess is they would both be null, but I need to execute logic which > hinges on whether the attribute exists and has a null value > OR whether it exists at all. > You can test whether the attribute exists: xsl:if test="/root/user[@name='Alex']/@color" Mike Kay Software AG XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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