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The fn:containsIgnoreCase() function is used to determine whether a string contains a specified substring, ignoring case.
The syntax of the fn:containsIgnoreCase() function is as follows:
<c:if test="${fn:containsIgnoreCase(<original string>, <substring to search>)}">
...
</c:if>The following example demonstrates the function's functionality:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
<html>
<head>
<title>Using JSTL Functions</title>
</head>
<body>
<c:set var="theString" value="I am from w3codebox"/>
<c:if test="${fn:containsIgnoreCase(theString, 'w3codebox')}>
<p>Found w3codebox<p>
</c:if>
<c:if test="${fn:containsIgnoreCase(theString, 'w3codebox')}>
<p>Found w3codebox<p>
</c:if>
</body>
</html>Running results are as follows:
Found w3codebox Found w3codebox