1:将DataTime类型转为特定格式的时间 时间.ToString("yyyy-MM-dd") 2: var reg = /^((0\d{3,4})-)(\d{7,8})(-(\d{3,}))?$/; 0771-4213550-010 var reg = /^((0\d{3,4})-)(\d{7,8})$/; 0771-4213550 :