Method not getting called on succes of tx.executeSql

I am trying to make sql transaction by using this function,

db.transaction(function(tx) {
                        var selectquality = 'select Name,AA_rating,Latitude,Longitude,Seopermalink, PhoneNumber from quality';
                        tx.executeSql(selectquality, [], nresponse);
                    });

but here method nresponse is not getting called.Any suggestion or help is appreciated.Please help me in this regard.