Regex to accept numbers and/or number range separated by commas, but between range 1-4093
问题 I need a regex to validate VLAN string entered by user. The string should allow numbers or ranges, separated by comma. The numbers must be between 1 and 4093. Below samples are allowed: 1, 1,2,3,4 1-10, 1-4093 4000 I tried below : ^0*([1-9]|[1-8][0-9]|9[0-9]|[1-8][0-9]{2}|9[0-8][0-9]|99[0-9]|[1-3][0-9]{3}|40[0-8][0-9]|409[0-3])$ Need to enhance for comma separated and ranges 回答1: To match a number from 1 to 4093 one can use: (?:[1-9]\d{0,2}|[1-3]\d{3}|40(?:[0-8]\d|9[0-3])) That we'll call N .