const reg = /^(?!0+(?:.0+)?$)(?:[1-9]\d*|0)(?:.\d{1,2})?$/
const reg = /^[\d]+$/
const reg = /^[A-Za-z]+$/
const reg = /^(?=.?[A-Z]).$/
const reg = /^(?=.[A-Za-z])(?=.\d)[A-Za-z\d]{2,}$/