JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="ctf--b-filt-c-item open ctf--b-filt-c-item--active">
  <div class="ctf--b-filt-c-head"><span class="b-txt">Единица измерения:</span></div>
  <div class="ctf--b-filt-c-body" style="display: block;">
    <div class="ctf--b-wpr-scr">
      <ul class="ctf--b-filt-check-list ctf--b-filt-check-list--double">        
        <li>
          <input type="checkbox" id="idchkk_2_0_0" value="11770">
          <label for="idchkk_2_0_0">
            <i></i>
            Килограмм
          </label>
        </li>
        <li>
          <input type="checkbox" id="idchkk_2_0_1" value="11771">
          <label for="idchkk_2_0_1">
            <i></i>
            Тонна
          </label>
        </li>
      </ul>
      <ul class="ctf--b-filt-check-list ctf--b-filt-check-list--double">
      </ul>
    </div>
  </div>
</div>


<div class="ctf--b-filt-c-item open ctf--b-filt-c-item--active">
  <div class="ctf--b-filt-c-head"><span class="b-txt">Полярность:</span></div>
  <div class="ctf--b-filt-c-body" style="display: block;">
    <div class="ctf--b-wpr-scr">
      <ul class="ctf--b-filt-check-list ">
        <li>
          <input type="checkbox" id="idchkk_2_2_0" value="11773">
          <label for="idchkk_2_2_0">
            <i></i>
            Обратная
          </label>
        </li>
        <li>
          <input type="checkbox" id="idchkk_2_2_1" value="11776">
          <label for="idchkk_2_2_1">
            <i></i>
            Прямая
          </label>
        </li>
      </ul>
    </div>
  </div>
</div>

<div id="count"></div>
<div id="unit"></div>

JavaScript

var label = $('.ctf--b-filt-check-list label'),
  checkbox = $('.ctf--b-filt-check-list :checkbox').on('change', function() {
    var checked = checkbox.filter(':checked');
    $('#count').html('Выбрано: ' + checked.length);
    var labelText = checked.map(function(i, el) {
      return label.filter('[for="' + el.id + '"]').text();
    }).get().join(',');
    $('#unit').html('Названия: ' + labelText);
  });