JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
<link rel="stylesheet" href="https://cdn.datatables.net/1.10.19/css/jquery.dataTables.css">
<script src="https://cdn.datatables.net/1.10.19/js/jquery.dataTables.js"></script>
<hr>
<p>
    Region
  </p>
  <label>
                        <input type="checkbox" name="region" value="North West">North West</label>
  <label>
                        <input type="checkbox" name="region" value="Yorkshire and Humber">Yorkshire and
                        Humber</label>
  <label>
                        <input type="checkbox" name="region" value="North East">North East</label>
  <label>
                        <input type="checkbox" name="region" value="West Midlands">West Midlands</label>
  <label>
                        <input type="checkbox" name="region" value="East Midlands">East Midlands</label>
  <label>
                        <input type="checkbox" name="region" value="London">London</label>
  <label>
                        <input type="checkbox" name="region" value="East England">East England</label>
  <label>
                        <input type="checkbox" name="region" value="South East">South East</label>
  <label>
                        <input type="checkbox" name="region" value="South West">South West</label>
  <label>
                        <input type="checkbox" name="region" value="Wales">Wales</label>
  <label>
                        <input type="checkbox" name="region" value="Northern Ireland">Northern Ireland</label>
  <label>
                        <input type="checkbox" name="region" value="Scotland">Scotland</label>
<hr>
<table id="table-candidates-list" class="display" style="width: 100%">
  <thead>
    <tr>
      <th>First name</th>
      <th>Last name</th>
      <th>Date of birth</th>
      <th>Date of registration</th>
      <th>Status</th>
      <th class="hidden">Region</th>
      <th class="hidden">Salary</th>
      <th class="hidden">Skills</th>
    </tr>
  </thead>
 ...

JavaScript

$(document).ready(function() {

  var table = $('#table-candidates-list').dataTable({
    responsive: true,
    "info": false,
    "pagingType": "numbers",
    "columnDefs": [
      {
        "targets": [5],
        "visible": false
      },
      {
        "targets": [6],
        "visible": false
      },
      {
        "targets": [7],
        "visible": false
      },
    ]
  });

  $('input:checkbox').on('change', function () {
    table.fnDraw();
  });

  $.fn.dataTable.ext.search.push(
    function (settings, searchData, index, rowData, counter) {
      var region = $('input:checkbox[name="region"]:checked').map(function () {
        return this.value;
      }).get();

      if (region.length === 0) {
        return true;
      }

      if (region.indexOf(searchData[5]) !== -1) {
        return true;
      }

      return false;
    }
  );

});