Eswar Eswar - 1 month ago 10
Javascript Question

Is possible : javascript extract value from c:forEach tag?



i have populate some values using c:forEach tag. I want to get those values in my javascript.

If I click GetCtag value button, then i want to read from (c:forEach) values in javascript.

Is any other-way to retrieve the c:forEach tag value

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@ taglib uri="http://richfaces.org/a4j" prefix="a4j"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">

<f:view>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<script type="text/javascript">

function getCTagValue(ctagObject)
{
alert("CFor Each Tag Object Value: " + ctagObject);
// Here i want write code for retrieve the c:forEach tag value
}

</script>
</head>
<body>
<h:form id="cTagForm" >

<c:forEach items="${cTagBean.tagList}" var="ctag">
<c:out value="${ctag.name} : "/>
<c:out value="${ctag.age}"/></br>
</c:forEach>

<a4j:commandButton id="GetCtagId" value="GetCtag" oncomplete="getCTagValue('#{cTagBean.tagList}')"/>

</h:form>
</body>
</html>




Help me.
Thanks in advance.

Answer

Just print it in JavaScript syntax instead of HTML syntax.

<script>
    var data = {
        <c:forEach items="${cTagBean.tagList}" var="ctag" varStatus="loop">
            '${ctag.name}': ${ctag.age}${!loop.last ? ',' : ''}
        </c:forEach>
    };
</script>

So that it end up as valid JavaScript object (assuming that name returns String and age returns Number):

<script>
    var data = {
        'foo': 10,
        'bar': 5,
        'waa': 20
    };
</script>