Also it would accept john...doe@gmail.com which is also invalid since there cannot be more than one dot in a sequence.
ມັນກໍ່ຈະຍອມຮັບ john ...doe@gmail.com ເຊິ່ງມັນຍັງບໍ່ຖືກຕ້ອງເນື່ອງຈາກວ່າມັນບໍ່ສາມາດມີຫຼາຍກວ່າ ຫນຶ່ງ ຈຸດໃນ ລໍາ ດັບ.