How to add multiple test conditions in 'test' attribute expression of tag

Question

Is there any possibility to include multiple conditions in \'test\' attribute expression in tag of XSLT like

Answer 1

<xsl:if test="$var='ab' | $var='bc' | $var='ca' ">

This is wrong -- you are using the XPath union operator | on boolean values.

Solution: use the XPath or operator:

<xsl:if test="$var='ab' or $var='bc' or $var='ca' ">

The above XPath expression (the value of the test attribute) can be optimized, so that only one comparison is made and no or is necessary:

<xsl:if test="contains('|ab|bc|ca|', concat('|', $var, '|'))">

Answer 2

In XSLT 2.0 or above, you can test against a sequence of strings:

<xsl:if test="$var=('ab','bc','ca')">...</xsl:if>