Regular Expressions 101

Get ID from plain text fromm yt-dlp

This regex can be used to select SI units of gallon, litres, kilograms, kilometres, pounds.

Use to get any character, digit or space between parentheses

Function call capture group

Use to validate basic website URLs with or without http://. I took bits and pieces of other regexes I found and compiled into one that worked well for my purposes.

/^(?P0|1-9]\d)\.(?P0|[1-9]\d)\.(?P0|[1-9]\d)(?:-(?P(?:0|[1-9]\d|\d[a-zA-Z-)(?:\.(?:0|1-9]\d|\d[a-zA-Z-))))?(?:\+(?P[0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$/gm

This will match any words that show up before the @ sign in an email. Digits, dots, commasz and other special characters are ignored.

Removes "" tags from plain text notes.

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A regex to find a searchQuery inside html But not: inside tag inside tag indide href of tag

redirect old slugs to new

Get ip address (only ipv4) Validator

Support both capital and small letters, could be 01:00AM of 1:00AM

match html reg

Get ip address (only ipv6) Validator

Get ip address (only ipv4) Validator

This workspace contains the needed ECMAScript regex for use in Cloudflare Workers Email Routing.

regex to prevent special charecters and allow white spaces for your string

Separate first and last names. Capitalization matters. Ignore middle initials but allow middle names. Multiple last names may be mistaken for middle names. Groups could be changed to capture middle names separately, middle initials, etc.

Matching date patterns for coursera text mining assignment 1.