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 ...

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

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

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

Matches all valid IP addresses from 0.0.0.0 to 255.255.255.255

Extracts values of the form £nnn,nnn.nn or $nnn.nnn from text

Validates IPv4 IP Address

The secret of the Twitterverse.

Checks that a password has a minimum of 6 characters, at least 1 uppercase letter, 1 lowercase letter, and 1 number with no spaces.

YourLink - not found AnotherLink - found

This regex validates varying types of telephone numbers.