Awesome Regex

This is a list of the most common and useful regex. Feel free to contribute to the list!

🌍 Geography

🇺🇸 US zip code

/(^\d{5}(-\d{4})?$)|(^[ABCEGHJKLMNPRSTVXY]{1}\d{1}[A-Z]{1} *\d{1}[A-Z]{1}\d{1}$)/

🕙 Time

Dates

Detect dates in the "DD/MM/YYYY" format.

/^(0?[1-9]|[12][0-9]|3[01])([ \/\-])(0?[1-9]|1[012])\2([0-9][0-9][0-9][0-9])(([ -])([0-1]?[0-9]|2[0-3]):[0-5]?[0-9]:[0-5]?[0-9])?$/

ISO-8601 format

/^(?![+-]?\d{4,5}-?(?:\d{2}|W\d{2})T)(?:|(\d{4}|[+-]\d{5})-?(?:|(0\d|1[0-2])(?:|-?([0-2]\d|3[0-1]))|([0-2]\d{2}|3[0-5]\d|36[0-6])|W([0-4]\d|5[0-3])(?:|-?([1-7])))(?:(?!\d)|T(?=\d)))(?:|([01]\d|2[0-4])(?:|:?([0-5]\d)(?:|:?([0-5]\d)(?:|\.(\d{3})))(?:|[zZ]|([+-](?:[01]\d|2[0-4]))(?:|:?([0-5]\d)))))$/

📡 INTERNET

URLS

/^((https?|ftp|file):\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\/?$/

📄 HTML tags

/^<([a-z1-6]+)([^<]+)*(?:>(.*)<\/\1>| *\/>)$/

📧 Emails

/^.+@.+$/

IPV4 Address

/^(?:(?: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]?)$/

IPV6 Address

/^(([0-9a-fA-F]{1,4}:){7,7}[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]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$/

Misc

🇺🇸 US Phone Numbers

Detect phone numbers

/^[2-9]\d{2}-\d{3}-\d{4}$/

🇫🇷 French Phone Numbers

/^(?:(?:\+|00)33[\s.-]{0,3}(?:\(0\)[\s.-]{0,3})?|0)[1-9](?:(?:[\s.-]?\d{2}){4}|\d{2}(?:[\s.-]?\d{3}){2})$/