multiple filters based on checkbox and divs id's and classes

The idea is to filter divs by comparing dynamically generated classes for divs and dynamically generated id's for checkboxes, where only divs with classes matching id's of checked checkboxes would show.

Simplified html of it

<div class="itemswrap">
  <div class="inditem dynamic1 dynamic12"></div>
  <div class="inditem dynamic2 dynamic22"></div>
  <div class="inditem dynamic3 dynamic32"></div>
  <div class="inditem dynamic2 dynamic42"></div>
</div>


<ul class="subnav">
  <li class="lifilter">
    <input type="checkbox" class="filtercheck" id="dynamic1" />
    <label for="dynamic1">whatever label</label>
  </li>
  <li class="lifilter">
    <input type="checkbox" class="filtercheck" id="dynamic2" />
    <label for="dynamic1">whatever label</label>
  </li>
  <li class="lifilter">
    <input type="checkbox" class="filtercheck" id="dynamic3" />
    <label for="dynamic1">whatever label</label>
  </li>
</ul> 

<ul class="subnav2">
  <li class="lifilter2">
    <input type="checkbox" class="filtercheck2" id="dynamic12" />
    <label for="dynamic12">whatever label</label>
  </li>
  <li class="lifilter2">
    <input type="checkbox" class="filtercheck2" id="dynamic22" />
    <label for="dynamic12">whatever label</label>
  </li>
  <li class="lifilter2">
    <input type="checkbox2" class="filtercheck2" id="dynamic32" />
    <label for="dynamic12">whatever label</label>
  </li>
</ul>

And the js i've got so far.

  var $filters = $('.filtercheck').change(function() {
  var $items = $('.inditem').hide();
  var filters = $filters.filter(':checked').map(function() {
    return '.' + this.id;
  }).get();
  if (filters.length) {
    $items.filter(filters.join()).show();
  } else {
    $items.show();
  }
});

  var $filtersb = $('.concernfilter').change(function() {
  var $itemsb = $('.inditem').hide();
  var filtersb = $filtersb.filter(':checked').map(function() {
    return '.' + this.id;
  }).get();
  if (filtersb.length) {
    $itemsb.filter(filters.join()).show();
  } else {
    $itemsb.show();
  }
});