Copyright © tutorialspoint.com

# JSTL XML <x:if> Tag

The <x:if> tag evaluates a test XPath expression and if it is true, it processes its body. If the test condition is false, the body is ignored.

## Attribute:

The <x:if> tag has following attributes:

Attribute | Description | Required | Default
--- | --- | --- | ---
select | The XPath expression to be evaluated | Yes | None
var | Name of the variable to store the condition's result | No | None
scope | Scope of the variable specified in the var attribute | No | Page

## Example:

Following is an example to show you usage of <x:if> tag:

    <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
    <%@ taglib prefix="x" uri="http://java.sun.com/jsp/jstl/xml" %>

    <html>
    <head>
      <title>JSTL x:if Tags</title>
    </head>
    <body>
    <h3>Books Info:</h3>

    <c:set var="xmltext">
      <books>
        <book>
          <name>Padam History</name>
          <author>ZARA</author>
          <price>100</price>
        </book>
        <book>
          <name>Great Mistry</name>
          <author>NUHA</author>
          <price>2000</price>
        </book>
      </books>
    </c:set>

    <x:parse xml="${xmltext}" var="output"/>

    <x:if select="$output//book">
       Document has at least one <book> element.
    </x:if>
    <br />
    <x:if select="$output/books[1]/book/price > 100">
       Book prices are very high
    </x:if>

    </body>
    </html>

Now let us try to access above JSP, this would produce following result:

### Books Info:

Document has at least one <book> element.
Book prices are very high

Copyright © tutorialspoint.com