var username = $( 'tr#' + updateId + ' td#username_tpl' );
                        var name = $( 'tr#' + updateId + ' td#name_tpl' );
                        var email = $( 'tr#' + updateId + ' td#email_tpl' );

                        $( username ).html( $( '#username_form' ).val() );
                        $( name ).html( $( '#name_form' ).val() );
                        $( email ).html( $( '#email_form' ).val() );

<script type="text/template" id="readTemplate">
<tr id="${id}">
			<td id = "username_tpl">${username}</td>
            <td id = "name_tpl">${name}</td>
            <td id = "email_tpl">${email}</td>
			<td>
....


 <form action="" method="post">
            <p>
               <label for="username">Username:</label>
               <input type="text" id="username_form" name="username" />
            </p>
            <p>
               <label for="name">Name:</label>
               <input type="text" id="name_form" name="name" />
            </p>