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JSTL fn:indexOf() Function

The fn:indexOf() function return an index of string. It is used for determining the index of string specified in substring.

The syntax used for including the fn:indexOf() function is:

Let's see the simple example to understand the functionality of fn:indexOf() 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="string1" value="It is first String."/>
<c:set var="string2" value="It is <xyz>second String.</xyz>"/>

<p>Index-1 : ${fn:indexOf(string1, "first")}</p>
<p>Index-2 : ${fn:indexOf(string2, "second")}</p>

</body>
</html>

Output:

Index-1 : 6
Index-2 : 11

JSTL Function Tags5

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