Passing html text field as a c:url parameter

[Scott Updike]

All,

I have a simple jsp page with a submission form as well as a link. What I need to do is figure out a way to pass the value in the storecredit text field in the updateTxnCustomer form as a parameter to the link. The user has the ability to alter the prepopulated value in the text field, so it could be different from the salestxnto.storecredit value.

How do I do this?

Thanks,
Scott

 <form name="updateTxnCustomer" action="updateTxnCustomer.do">
       
    <table>
      
    <tr><td>Store Credit:</td><td><b>$</b><input name="storecredit" property="storecredit" value="${salestxnto.storecredit}" /></td><td>
    
        <c:choose>
            <c:when test="${salestxnto.storecredit > 0}">
                <c:url value="applyStoreCredit.do" var="url">
                    <c:param name="storecredit" value="[???]"/>...

[Bear Bibeault]

You'll need to handle this on the client in JavaScript. How could the JSP know what the user is about to enter into the field before the page is even sent to the browser?