? Using <xsl:if> in XSLT (XML)

<xsl:if> lets you conditionally include content only if a test condition is true—like a simple "if" statement in programming.

Basic Syntax

<xsl:if test="condition">  <!-- content to include if condition is true --></xsl:if>

• The test attribute holds an XPath expression.

• If it evaluates to true, the content inside <xsl:if> is processed.

Example

XML Input

<user>  <name>Alice</name>  <age>25</age></user>

XSLT Using <xsl:if>

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">  <xsl:template match="user">    <div>      <p>Name: <xsl:value-of select="name"/></p>            <!-- Only show message if age is 18 or older -->      <xsl:if test="age &gt;= 18">        <p>Adult User</p>      </xsl:if>    </div>  </xsl:template></xsl:stylesheet>

Resulting Output

<div>  <p>Name: Alice</p>  <p>Adult User</p></div>

Summary

• Use <xsl:if> for simple conditional inclusion.

• For multiple conditions or else, use <xsl:choose> with <xsl:when> and <xsl:otherwise>.

Would you like an example combining <xsl:if> with other XSLT instructions?