Adding textarea

Adding textarea after clicking button inside modal

HTML

<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.2/css/bootstrap.min.css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.2/js/bootstrap.min.js"></script>
<!-- Button trigger modal -->
<button id="btnShowModal" class="btn btn-primary btn-lg launch-modal" data-toggle="modal" data-target="#myModal">
  Launch modal
</button>

<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
        <h4 class="modal-title" id="myModalLabel">Modal title</h4>
      </div>
      <div class="modal-body">
      <form method="post" action="/echo/html/" ajax="true">
      <p>Some text here</p>
      <div>another foo text</div>
      <!--<textarea class="hide" id="textarea-message"></textarea>-->
      <span id="result"></span>
      <input id="replyText" type="text" name="html" placeholder="Sandman message..." />
       <input type="submit" name="html" class="btn btn-reply btn-sm btn-success pull-right" value="Reply that foo!" />
      
        </form>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
        
      </div>
      
    </div><!-- /.modal-content -->
  </div><!-- /.modal-dialog -->
</div><!-- /.modal -->

CSS

.launch-modal {
    margin: 20px;
}
#result { display:block}

JavaScript

$('#myModal').on('shown.bs.modal', function () {

	$(document).on('click', '.btn-reply', function () { 
    var text = $('#textarea-message').val();
    var html = '<input type="textarea" name="message" placeholder="Enter Sandman message ..." class="form-control" id="textarea-message" autocomplete="off" maxlength="200">';
   
})
});

$('#btnShowModal').click(function () {
	$('#textarea-message').addClass('hide');
});
$('#btnReply').click(function () {

	$('#textarea-message').removeClass('hide');
});

$(document).ready(function(e) {
    if ( e.which == 13 ) {
       
    }
    $("form[ajax=true]").submit(function test(e) {
        e.preventDefault();
        var form_data = $(this).serialize();
        var form_url = $(this).attr("action");
        var form_method = $(this).attr("method").toUpperCase();
        
        $.ajax({
            url: form_url, 
            type: form_method,      
            data: form_data,     
            cache: false,
            success: function(returnhtml){                          
                $("#result").html(returnhtml);                
            }           
        });    
        
    });
    
});