html - jquery `$form.find` get element inside form -

i have jquery code:

if ($form.find('.required').filter(function(){ return this.value === '' }).length > 0) {  } 

within if statement, how can each element , add class it?

i tried $(this).addclass("emptyselect"); adds class form , not element

perform addclass right after filter() call

    var emptyelements = $form.find('.required').filter(function() {         return this.value === ''     });     if (emptyelements.length > 0) {         emptyelements.addclass("emptyselect");     } 

however, can connect filter statement addclass without if since filter return empty elements

$form.find('.required').filter(function() {             return this.value === ''         }).addclass("emptyselect");