|功能|表達式| |--| |用戶名|/^[a-z0-9_-]{3,16}$/ | |密碼|/^[a-z0-9_-]{6,18}$/ | |十六進制值|/^#?([a-f0-9]{6}\|[a-f0-9]{3})$/ | |電子郵箱| /^([a-z0-9_\\.-]+)@([\\da-z\\.-]+)\\.([a-z\\.]{2,6})$/<br>/^[a-z\\d]+(\\.[a-z\\d]+)*@([\\da-z](-[\\da-z])?)+(\\.{1,2}[a-z]+)+$/ | |URL| /^(https?:\\/\\/)?([\\da-z\\.-]+)\.([a-z\\.]{2,6})([\\/\\w \.-]*)*\\/?$/ | |IP 地址| /((2[0-4]\\d|25[0-5]\|[01]?\\d\\d?)\\.){3}(2[0-4]\\d\|25[0-5]|[01]?\\d\\d?)/\\|/^(?:(?:25[0-5]\|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/ | |HTML 標簽| /^<([a-z]+)([^<]+)*(?:>(.*)<\/\1>|\s+\/>)$/ | |刪除代碼\\\\注釋 |(?<!http:\|\\S)//.*$ | |Unicode編碼中的漢字范圍 |/^[\\u2E80-\\u9FFF]+$/ |