JSTL fn:startsWith() Function

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The fn:startsWith() function determines whether an input string starts with a specified substring.

Syntax:

The fn:startsWith() function has following syntax:

boolean startsWith(java.lang.String, java.lang.String)

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="string" value="Second: This is first String."/>
<c:if test="${fn:startsWith(string, 'First')}">
   <p>String starts with First</p>
</c:if>
<br />
<c:if test="${fn:startsWith(string, 'Second')}">
   <p>String starts with Second</p>
</c:if>

</body>
</html>

This would produce following result:

String starts with Second


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