<!-- testpost.php -->
<?php var_dump($_POST); ?>

<form name="create" action=""  style="padding-top:5px 0" method="post">
          <div id="seatsss" class="login">

          <!-- Load content here-->

         </div>
</form>
<script
  src="https://code.jquery.com/jquery-3.3.1.min.js"
  integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8="
  crossorigin="anonymous"></script>
<script type="text/javascript">

     //jquery codes.

      $(document).ready(function(){
      $('#seatsss')
      $('#seatsss').load('busload.php');
      refresh();
      });

      function refresh(){

     setTimeout( function(){
      $('#seatsss').load('busload.php').fadeIn('slow');
      refresh();
      }, 5000);

      }
</script>

<!-- busload.php -->

    <input type="text" name="test">
    <button type="submit" class="btn btn-block" id="btnID1" name="submit1421">Save</button>