$('#ordersTable').html('#{j(render('orders'))}');

:plain
  $('.expand-trigger').click(function() {
    var orderId = $(this).closest('tr').data('order_id');
    var expandedRow = $('#expanded-row-' + orderId);
    // Toggle visibility of the expanded row
    expandedRow.slideToggle();
    return false; // Prevent the default behavior of the link
  });