jQuery: dependent filter

jQuery_dependent.js

$('[data-depends-on]').each(function(){
  var $this = $(this);
  var depends_on = $this.data('depends-on');  
  $this.hide();
  $('[for="'+ $this.attr('id') + '"]').hide();
  $('#'+depends_on).on('change',function(event) {
    var $this = $(this);
    if($this.val()){
      var $depends_on_element = $('[data-depends-on="'+ depends_on + '"]');
      $depends_on_element.fadeIn();
      $('[for="'+ $depends_on_element.attr('id') + '"]').fadeIn();
    }else{
      $('[data-depends-on="'+ depends_on + '"]').fadeOut();
      $('[for="'+ depends_on + '"]').fadeOut();
      $('[data-depends-on="'+ depends_on + '"]').val('');
      $('[data-depends-on="'+ depends_on + '"]').trigger('change');
    }
  });
});