java-tutorials/jsf/src/main/webapp/el_intro.xhtml

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HTML

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:c="http://java.sun.com/jsp/jstl/core"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
<title>Baeldung | The EL Intro</title>
</h:head>
<h:body>
<h:form id="elForm">
<h:messages/>
<h:panelGrid columns="2">
<h:outputText value="First Name"/>
<h:inputText id="firstName" binding="#{firstName}" required="true" value="#{ELBean.firstName}"/>
<h:outputText value="Last Name"/>
<h:inputText id="lastName" required="true" value="#{ELBean.lastName}"/>
<h:outputText value="Save by value binding"/>
<h:commandButton value="Save" action="#{ELBean.save}">
</h:commandButton>
<h:outputText value="Evaluate backing bean EL"/>
<h:commandButton value="Save" action="#{ELBean.saveByELEvaluation}">
</h:commandButton>
<h:outputText value="Save by passing value to method"/>
<h:commandButton value="Save"
action="#{ELBean.saveFirstName(firstName.value.toString().concat('(passed)'))}"/>
<h:outputText value="JavaScript (click after saving First Name)"/>
<h:button value="Alert" onclick="alert('Hello #{ELBean.firstName}')"/>
</h:panelGrid>
<br/>
<h:outputText value="Current Request HTTP Headers:"/>
<table border="1">
<th>Key</th>
<th>Value</th>
<c:forEach items="#{header}" var="header">
<tr>
<td>#{header.key}</td>
<td>#{header.value}</td>
</tr>
</c:forEach>
</table>
</h:form>
</h:body>
</html>