The <xsl:if> element contains a test attribute and a template. If the test evaluates to true, the template is processed. In this it is similar to an if statement in other languages. To achieve the functionality of an if-then-else statement, however, use the <xsl:choose> element with one <xsl:when> and one <xsl:otherwise> children.
Syntax:
<xsl:if test=EXPRESSION>
TEMPLATE
</xsl:if>
Required Attributes:
test:
Contains an XPath expression that can be evaluated (using the rules defined for boolean( ) if necessary) to a Boolean value. If the value is true, the template is processed; if it is not, no action is taken.
Optional Attributes: None.
Type: Instruction, appears within a template.
Defined: XSL section 9.1.
NS support: Supported
