https://www.zumbroendurancerun.com/wp-content/themes/rsr-divi/js/datatables.results.js?ver=7.1.2

1jQuery(document).ready(function() {
2  if (document.getElementById('rsr-race-results')) {
3    var $raceResults = jQuery('#rsr-race-results');
4    var sheetKey = $raceResults.data('key');
5    var ignoreCols = $raceResults.data('ignore-cols');
6    var pageLength = $raceResults.data('records') || 50000;
7    var startYear = $raceResults.data('start-year') || 1993;
8    var endYear = $raceResults.data('end-year') || 2018;
9    var table = jQuery('#rsr-race-results').DataTable( {
10      ajax: '/wp-json/results/v1/race/' + sheetKey,
11      deferRender: true,
12      order: [[ 0, "desc" ]],
13      paging: true,
14      responsive: true,
15      columnDefs: [
16        { responsivePriority: 2, targets: [1] },
17        { responsivePriority: 1, targets: [0, 3, 4] }
18      ],
19      pageLength: pageLength,
20      lengthChange: false,
21      initComplete: function (settings) {
22        var table = settings.oInstance.api();
23        var raceYears = '<option>-Select Year-</option>';
24        for (var i = endYear; i >= startYear; i--) {
25          raceYears += ('<option value="' + i + '">' + i + '</option>');
26        }
27        var $select = jQuery('<select id="rsr-race-results_year-filter">' + raceYears + '</select>');
28        $select.css('float', 'right');
29        $select.css('margin-left', '10px');
30        $select.css('height', 35.5);
31        $select.on('change', function(e) {
32          table.draw();
33        });
34        jQuery('#rsr-race-results_filter').before($select);
35
36        jQuery.fn.dataTable.ext.search.push(
37          function( settings, data, dataIndex ) {
38            var year = parseInt(data[0], 10);
39            var searchYear = parseInt(jQuery('#rsr-race-results_year-filter option:selected').val(), 10);
40            if (isNaN(searchYear) || (year === searchYear)) return true;
41            return false;
42          }
43        );
44      }
45    });
46  }
47});