s='12345678922.12'.replace(/(\d)(?=(\d{3})+(?!\d))/g,'$1,') console.log(s); 相关文章: 2022-12-23 2021-11-25 2022-12-23 2022-12-23 2021-07-02 2022-12-23 2021-07-31 2021-11-14