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JSTL fn:contains() Function
The fn:contains() function determines whether an input string contains a specified substring.
Syntax:
The fn:contains() function has following syntax:
boolean contains(java.lang.String, java.lang.String)
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Example:
Following is the example to explain the functionality of this function:
<%@ 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 a test String"/>
<c:if test="${fn:contains(theString, 'test')}">
<p>Found test string<p>
</c:if>
<c:if test="${fn:contains(theString, 'TEST')}">
<p>Found TEST string<p>
</c:if>
</body>
</html>
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This would produce following result:
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