Index reinitialize

HTML

<script src="https://cdn.datatables.net/1.10.25/js/jquery.dataTables.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/moment.js/2.8.4/moment.min.js"></script>
<script src="//cdn.datatables.net/plug-ins/1.10.25/sorting/datetime-moment.js"></script>
<table id="example" class="display" style="width:100%">
        <thead>
            <tr>
                <th>ID</th>
                <th>Name</th>
                <th>Position</th>
                <th>Office</th>
                <th>Age</th>
                <th>Salary</th>
                <th>Date</th>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td></td>
                <td>Tiger Nixon</td>
                <td>System Architect</td>
                <td>Edinburgh</td>
                <td>61</td>
                <td>$320,800</td>
                <td>10/10/2020</td>
            </tr>
            <tr>
                <td></td>
                <td>Garrett Winters</td>
                <td>Accountant</td>
                <td>Tokyo</td>
                <td>63</td>
                <td>$170,750</td>
                <td>09/10/2020</td>
            </tr>
            <tr>
                <td></td>
                <td>Ashton Cox</td>
                <td>Junior Technical Author</td>
                <td>San Francisco</td>
                <td>66</td>
                <td>$86,000</td>
                <td>12/10/2020</td>
            </tr>
            <tr>
                <td></td>
                <td>Cedric Kelly</td>
                <td>Senior Javascript Developer</td>
                <td>Edinburgh</td>
                <td>22</td>
                <td>$433,060</td>
                <td>12/10/2020</td>
            </tr>
            <tr>
                <td></td>
                <td>Airi Satou</td>
                <td>Accountant</td>
                <td>Tokyo</td>
                <td>33</td>
                <td>$162,700</td>
                <td>12/10/2020</td>
            </tr>
       ...

JavaScript

$(document).ready(function() {
    $.fn.dataTable.moment( 'DD/MM/YYYY' );

    var t = $('#example').DataTable( {
        "columnDefs": [ {
            "orderable": true,
            "searchable": true,
            "targets": [0-6]
        }],
        "order": [[ 3, 'asc' ]],
        initComplete: function ()  {
        var api = this.api();
        api.column(0, {search:'applied', order:'applied'}).nodes().each( function (cell, i) {
            cell.innerHTML = i+1;
        } );
   			api.draw();        	
        }
    } );

} );