This regex matches only when all the following are true: password must contain 1 number (0-9) password must contain 1 uppercase letters password must contain 1 lowercase letters password must contain 1 non-alpha numeric number...

RegEx email /^((?!\.)[\w-_.]*)(@\w+)(\.\w+(\.\w+)?)$/gim; Just playing with Reg Ex. This to validate emails in following ways ...

Pattern matching and extracting color code formats using RegEx. https://github.com/Kyza/color-regex/

extract video id, index, play list id from youtube url

Matches all valid IP addresses from 0.0.0.0 to 255.255.255.255

Simply searches for the thread-id in any kind of valid reddit-URL.

This regex should extract the subdomain, if any, or the domain, if no subdomain is used, from an arbitrary URL

A neat regex for finding out whether a given torrent name is a series or a movie. Returns the full name of the series with the separator needed to make it pretty (ie, replace it with space or what you want). Also returns the season number or the year for the movie/series, depending on what was prev...

Allows inserting expiry date as MM/YYYY or MM-YYYY format

Form Tag

Find and extract email domain. Ex: test@example.pt -> extract 'example.pt'

http://stackoverflow.com/q/25778420/2072035