JavaServer Pages, Second Edition

Name

<x:if>

Synopsis

The <x:if> action evaluates its body only if the specified XPath expression evaluates to true. Alternatively, the evaluation result can be saved as a scoped Boolean variable.

Syntax 1: Without a body

<x:if select="booleanXPathExpression" 
  var="var" [scope="page|request|session|application"]/>

Syntax 1: With a body

<x:if select="booleanXPathExpression">
  JSP elements
</x:if>

Attributes

Attribute name	Java type	Dynamic value accepted	Description
select	String	No	The XPath expression to evaluate.
var	String	No	The variable name. The type is Boolean.
scope	String	No	The variable scope.

Example

<x:if select="category[. = 'General']">
  <b>General</b>
</x:if>