How to add dropdown filter on jquery datatables plugin on single column?
<p>I want to add a drop-down filter on <code>dataTables</code>, only on a single column.
I have added the below code, but it add drop-downs on <strong>all</strong> columns:</p>

<pre><code>$('#dataTables-example').DataTable({
    responsive: true,
    "pageLength": 100,
    "lengthMenu": [100, 250, 500, "All"],
    initComplete: function () {
        this.api().columns().every( function () {
        var column = this;
        $('#dataTables-example .head .head_hide').html('');

        var select = $('&lt;select id="formfilter" class="filterdropdown"&gt;&lt;option value=""&gt;'+$(column.header()).text()+'&lt;/option&gt;&lt;/select&gt;')
            .appendTo( $(column.header()).empty())
            .on( 'change', function () {
                var val = $.fn.dataTable.util.escapeRegex(
                    $(this).val()
                );
                column
                    .search( val ? '^'+val+'$' : '', true, false )
                    .draw();
            });

        column.data().unique().sort().each( function ( d, j ) {
            select.append( '&lt;option value="'+d+'"&gt;'+d+'&lt;/option&gt;' )
        });
    }); 
});
</code></pre>