DataTables Accent neutralise
HTML
<link rel="stylesheet" href="https://cdn.datatables.net/v/dt/jq-3.6.0/dt-1.12.1/datatables.min.css">
<script src="https://cdn.datatables.net/v/dt/jq-3.6.0/dt-1.12.1/datatables.min.js"></script>
<script src="https://cdn.datatables.net/plug-ins/1.12.1/filtering/type-based/accent-neutralise.js"></script>
<table id="table_id" class="display">
<thead>
<tr>
<th>Column 1</th>
<th>Column 2</th>
</tr>
</thead>
<tbody>
<tr>
<td>New York</td>
<td>Test1</td>
</tr>
<tr>
<td>ZĂĽrich</td>
<td>Test2</td>
</tr>
</tbody>
</table>
JavaScript
$(document).ready( function () {
$('#table_id').DataTable();
} );