Match a ULID.

https://stackoverflow.com/questions/5312349/minifying-final-html-output-using-regular-expressions-with-codeigniter Thanks to @Alan Moore

Group 1 will have meeting id, group 2 will have password

https://conventionalcommits.org Parses commits like type(scope)!: subject

Regex of email with ability to add gmail's +example system example: root email = user@gmail.com gmail+ = user+extra@gmail.com

It needs a major modification, since matching an integer is required. The accepted answer \d+ involves only "positive" integers. But -333 or +777 are also integers, which leads to two possible solutions with the last one being the most accurate: -?\d+ : The hyphen (optional minus sign) and a digit...

A good enough approximation to IPv6 based on the examples at https://www.ibm.com/docs/en/ts3500-tape-library?topic=functionality-ipv4-ipv6-address-formats

A "simple" regex to parse mime types. Handles all commonly occurring parts of a mime type string such as: Type Subtype Subtype's with an extra extension (e.g. svg+xml) (Optional input) Multiple parameters (Optional input)...

Replace sub-strings in string

In order to neasting parsing work you need to run this regex multiple times on same target.

Regex to validate a string that is RFC3339 compliant in JavaScript. RFC3339: https://www.rfc-editor.org/rfc/rfc3339. Expands upon: https://regex101.com/r/qH0sU7 by adding named capture groups for coding best practices.

Matches palindromes: arbitrary length ignores non-significant characters (spaces, ponctuation) ignores accents, provided the text is NFD-normalized recursive palindromes (e.g. "a été à"): either match the longest one ("a été à") or the nested ones individually ("a", "été", "à") (see comment)

Phone number for all countries. Valid symbols: ( ), -, whitespace

Get ip address (only ipv4) Validator

validates against multiple common formats

ISD Codes for Phones Matches the basic format for ISD Codes.

Accomodate for Discord's username changeover and match against either the old username or the new username. But only one or the other. Match: CesarHvl#9000 cesarhvl cesar.hvl...

A simple parser to exact all the components of a URI/URL as named groups

pega a data e time

Matches protocol, domain, port, path, query and anchor as named capturing groups.