docs: function send(hb) {
      var url = hb.url + (hb.params || '');
      $.ajax({
          url: url,
          type: hb.method,
          data: hb.data ? hb.data : null,
          dataType: "json"
      }).done(function(data) {
          if (data.opts) {
              $.pjax.reload('#pjax-container');
          } else {
              alert('something wrong!');
          }
      }).fail(function() {
          alert('something wrong!');
      });
  }