常用正则表达式
用于验证和匹配的常用正则表达式模式
📝 ISO 日期格式 (YYYY-MM-DD)
🟢 simple
验证 ISO 8601 日期格式
🏷️ regex, regular-expression, pattern, validation, date, iso, format, basic
^\d{4}-(0[1-9]|1[0-2])-(0[1-9]|[12]\d|3[01])$📝 24小时制时间
🟢 simple
验证 HH:MM 格式的时间
🏷️ regex, regular-expression, pattern, validation, time, 24h, format, basic
^([01]\d|2[0-3]):[0-5]\d$📝 用户名
🟢 simple
验证用户名（字母数字、下划线、连字符）
🏷️ regex, regular-expression, pattern, validation, username, user, account, basic
^[a-zA-Z0-9_-]{3,16}$📝 美国邮政编码
🟢 simple
验证美国 ZIP 编码格式
🏷️ regex, regular-expression, pattern, validation, postal, zip, us, basic
^\d{5}(-\d{4})?$📝 十六进制颜色代码
🟢 simple
匹配十六进制颜色代码（#RGB 或 #RRGGBB）
🏷️ regex, regular-expression, pattern, validation, color, hex, css, basic
^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$📝 整数
🟢 simple
匹配正/负整数
🏷️ regex, regular-expression, pattern, validation, number, integer, basic
^-?\d+$📝 小数
🟢 simple
匹配带可选符号的小数
🏷️ regex, regular-expression, pattern, validation, number, decimal, basic
^-?\d+(?:\.\d+)?$📝 电子邮件地址
🟡 intermediate
验证电子邮件地址格式
🏷️ regex, regular-expression, pattern, validation, email, contact
^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$📝 URL / 网址
🟡 intermediate
匹配 HTTP/HTTPS URL
🏷️ regex, regular-expression, pattern, validation, url, web, http, https
^https?:\/\/(?:www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b(?:[-a-zA-Z0-9()@:%_\+.~#?&\/=]*)$📝 IPv4 地址
🟡 intermediate
验证 IPv4 地址
🏷️ regex, regular-expression, pattern, validation, ip, ipv4, network
^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$📝 美国电话号码
🟡 intermediate
匹配美国电话号码格式
🏷️ regex, regular-expression, pattern, validation, phone, us, contact
^(\+?1[-.\s]?)?\(?[0-9]{3}\)?[-.\s]?[0-9]{3}[-.\s]?[0-9]{4}$📝 强密码
🟡 intermediate
验证强密码（至少8位，包含大小写字母、数字、特殊字符）
🏷️ regex, regular-expression, pattern, validation, password, security
^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$📝 美国社会保障号码
🟡 intermediate
验证 SSN 格式
🏷️ regex, regular-expression, pattern, validation, ssn, us, identification
^(?!000|666)[0-8]\d{2}-(?!00)\d{2}-(?!0000)\d{4}$📝 HTML 标签
🟡 intermediate
匹配 HTML 标签
🏷️ regex, regular-expression, pattern, validation, html, tag, web
^<([a-z]+)([^<]+)*(?:>(.*)<\/\1>|\s+\/>)$📝 UUID / GUID
🟡 intermediate
验证 UUID 格式
🏷️ regex, regular-expression, pattern, validation, uuid, guid, identifier
^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$📝 MAC 地址
🟡 intermediate
验证 MAC 地址格式
🏷️ regex, regular-expression, pattern, validation, mac, network, hardware
^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$📝 IPv6 地址
🔴 complex
验证 IPv6 地址
🏷️ regex, regular-expression, pattern, validation, ip, ipv6, network, advanced
^(([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]+|::(ffff(:0{1,4})?:)?((25[0-5]|(2[0-4]|1?[0-9])?[0-9])\.){3}(25[0-5]|(2[0-4]|1?[0-9])?[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1?[0-9])?[0-9])\.){3}(25[0-5]|(2[0-4]|1?[0-9])?[0-9]))$📝 信用卡号
🔴 complex
匹配主要信用卡号码
🏷️ regex, regular-expression, pattern, validation, credit-card, payment, financial, advanced
^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|6(?:011|5[0-9]{2})[0-9]{12}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|(?:2131|1800|35\d{3})\d{11})$