Automatic update with AJAX / JSON

I'm a little lost at the moment as my code seems to work, but my table is not interested. XD

I am loading data from my db into a table and I want it to update automatically every three seconds. My JSON data is correct and js-console displays updated data. But my table doesn't want to display it, so I need to refresh the whole page. However, this is not what I want to do.

Here is my code (HTML + JS):

<script>
$(document).ready(function() {
    setInterval(function() {``
  $.ajax({
      url: "myStuff.php",
      success: function(data) {
          console.log(data);

          myRecords = $.parseJSON(data);
          $("#dynatable").dynatable({

              dataset: {
                  records: myRecords
              }
          });
      }
  });
    }, 3000);
});


<table id="dynatable">
    <thead>
    <th>test1</th>
    <th>test2</th>
    </thead>
    <tbody>
    </tbody>
</table>

      

        
        
        
      

    

PHP:

$response = array();

    while ($zeile = mysqli_fetch_array($db_erg, MYSQL_ASSOC)) {


    $response [] = array(
        "test1" => $zeile['wasd'],
        "test2" => $zeile['wasdf']
    );

}

echo json_encode($response);

      

        
        
        
      

    

When I add data to my database the returned JSON data is updated, I can see this in the js console. The problem is my table doesn't want to display it, it just shows the "old" data.

Any suggestions for solving this problem?

-------------------------------------------- ------ -----------

EDIT:

I got it now! This helped me solve my problem. Thanks for the help! :) Here is my code:

$(document).ready(function() {
    setInterval(function() {
        $.ajax({
            url: "myStuff.php",
            success: function(data) {
                console.log(data);

                var myRecords = $.parseJSON(data);

                var dynatable = $('#dynatable').dynatable({
                    dataset: {
                        records: myRecords
                    }
                }).data('dynatable');

                dynatable.settings.dataset.originalRecords = myRecords;
                dynatable.process();
            }
        });
    }, 3000);
});