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<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<html>
<head>
<title>JSTL Functions • Trim</title>
</head>
<body bgcolor="#FFFFFF">
<h2>Trim</h2>
<c:set var="s1" value="There is a castle on a cloud"/>
<c:set var="custId" value=" 123 "/>
<h4>fn:trim</h4>
<table cellpadding="5" border="1">
<tr>
<th align="left">Input String</th>
<th>Result</th>
</tr>
<tr>
<td><pre>${custId} (whithout trim)</pre></td>
<td><c:url value="http://acme.com/cust"><c:param name="custId" value="${custId}"/></c:url></td>
</tr>
<tr>
<td><pre>${custId} (whith trim)</pre></td>
<td><c:url value="http://acme.com/cust"><c:param name="custId" value="${fn:trim(custId)}"/></c:url></td>
</tr>
<tr>
<td>${s1}</td>
<td>${fn:trim(s1)}</td>
</tr>
<tr>
<td><pre> 3 spaces before and after </pre></td>
<td><pre>${fn:trim(" 3 spaces before and after ")}</pre></td>
</tr>
<tr>
<td>null</td>
<td> ${fn:trim(undefined)}</td>
</tr>
<tr>
<td>empty string</td>
<td> ${fn:trim("")}</td>
</tr>
</table>
</body>
</html>
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