code: function(_data){
                  var _result = {};
                  _data = _data||_o;
                  _result.origin = _data.origin||'';
                  _result.ref  = location.href;
                  _result.self = _data.source;
                  _result.data = JSON.stringify(_data.data);
                  return _key+_u._$object2string(_result,'|',!0);
              }
docs: serialize send data