Regular Expressions 101

asdad

Simple and easy regex to find valid IG hastags in a string

Find specific HTML attributes

self explainatory title, usernames array must not contain any exotic character besides ,

self explainatory title, username must not contain any exotic character.

match offset from utc offset string returned by the timeZoneName property of an Intl.DateTimeFormat object. (see MDN documentation here)

Start from 1900-01-01

Format YYYY-MM-JJ

Next.js middleware config matcher regex ~ https://nextjs.org/docs/app/building-your-application/routing/middleware#matcher ~ https://nextjs.org/docs/app/api-reference/file-conventions/middleware#config-object-optional Public - skip middleware /api/auth/*...

changelog

Purpose I wanted to make a regex that just works. This is it for ECMAScript engines. Capabilities ...

handles both JWS (3 segments) and JWE (5 segments) remove the ending (?:(?:... to handle JWS only segments 1+2 are expected tp start with e[yw], an encoded start of JSON object {" or {\n remove/extend it to match used token structure or make it even more restrictive (ey[IJ]|ewo) to match encod...

Regexp to match URI using syntax defined in RFC 3986 a.k.a. Uniform Resource Identifier (URI): Generic Syntax to create best URI regexp there is (noone bothered to do so). #URL #URI #RFC #3986 #RFC3986

Regexp to match URI-reference using syntax defined in RFC 3986 a.k.a. Uniform Resource Identifier (URI): Generic Syntax to create best URI-reference regexp there is (noone bothered to do so). #URL #URI #RFC #3986 #RFC3986

matches for any markdown Masked link text detected `` not detected (not valid(on most platforms))

This regex can be used to validate IPv4 and IPv6 addresses as well as CIDR ranges

Number string where only zeros follow the first digit

The CMS, who maintain these codes, describe the format as:- "HCPCS Level II codes (also known as alpha-numeric codes) consist of a single alphabetical letter followed by 4 numeric digits." (https://www.cms.gov/medicare/coding-billing/healthcare-common-procedure-system) NOTE: This regex will not ide...

The CMS, who maintain these codes, describe the format as:- "HCPCS Level II codes (also known as alpha-numeric codes) consist of a single alphabetical letter followed by 4 numeric digits." (https://www.cms.gov/medicare/coding-billing/healthcare-common-procedure-system) NOTE: This regex will not iden...

Extract html element & content