Yajra datatable regenerate issue in Laravel 6

I am using laravel 6 and trying to regenerate yajra datatable by following

    var dataTable = $('#my_list').dataTable();
    dataTable.fnDestroy();
    getMyList();

It's working. But First of all it shows broken table(during data population) after that table become nicely visible. Here is my data-table configuration

DataTable({
       iDisplayLength: 15,
       processing: true,
       serverSide: true,
       lengthChange: false,
       searching: true,
       paging: true,
       ajax: 

How can I overcome this or introduce preloader during fetching data

via Chebli Mohamed