Zoulou....<link href="bootstrapcss.css" rel="stylesheet">
<table class="table table-bordered table-striped" id="tablelist">
    <thead>
        <tr>
            <th>ID</th><th>Name</th><th>Roll</th><th>Position</th>
        </tr>
    </thead>
    <tbody>
                        <tr id="6">
                    <td>6</td>
                    <td>Vikas Moyal</td>
                    <td>8</td>
                    <td>1</td>
                    <input type="hidden" value="6" id="item" name="item">
                </tr>
                                <tr id="8">
                    <td>8</td>
                    <td>Khusbu Moyal</td>
                    <td>9</td>
                    <td>2</td>
                    <input type="hidden" value="8" id="item" name="item">
                </tr>
                                <tr id="5">
                    <td>5</td>
                    <td>Vivek Moyal</td>
                    <td>5</td>
                    <td>3</td>
                    <input type="hidden" value="5" id="item" name="item">
                </tr>
                                <tr id="7">
                    <td>7</td>
                    <td>Divya Moyal</td>
                    <td>10</td>
                    <td>4</td>
                    <input type="hidden" value="7" id="item" name="item">
                </tr>
                                <tr id="9">
                    <td>9</td>
                    <td>Savya Moyal</td>
                    <td>10</td>
                    <td>5</td>
                    <input type="hidden" value="9" id="item" name="item">
                </tr>
                    </tbody>
</table>
<script src="jquery.min.js"></script>
<script src="jquery-ui.min_1.js"></script>
<script>
  var $sortable = $( "#tablelist > tbody" );
  $sortable.sortable({
      stop: function ( event, ui ) {
          var parameters = $sortable.sortable( "toArray" );
          $.post("studentPosition.php",{value:parameters},function(result){
              alert(result);
          });
      }
  });
</script>