Usage: "40%".replace(/\b([\d\.]+)mkb%/ig, '$1')

This regular expression validates if given string is formatted in Base64, additional it accepts new lines, since payload can have new lines in it.

Extract all Steam Keys from a Given String

Validates hexadecimal color codes based on the following rule set: Optionally starting with a hash. 3 or 6 characters in length. Using the [0-9a-f] character set.

Valid and Invalid emails

Validate a Json Web Token (JWT).

validator voor kenteken vb: 11-AA-BB

parse the apache access log

Matches version strings.

This regular expression will match an IPv4 address as well as both compressed or uncompressed IPv6 address.

Validates that a DNS hostname is well-formed only. You will still need to check that the overall length of the hostname, including the implied trailing "." (if not present), does not exceed 255 bytes.

Regular expression to remove only the tags from the code. The regular expression only removes the tags, not the JS code inside the tag.

Match a MasterCard with new range for 2017: 51-55 and 2221-2720 @incarnated

Matches french numbers (not special numbers like 115, 18). First matching group contains the right part without prefix (0, +33, 33, 033, or 0033).

Selects first letter of space separted word with exceptions. This allows bypassing 's and such. Forcing separating charter can be set at [\s&\/] $1: separating part...

Validates CPA (Código Postal Argentino, spanish for Argentinian Postal Code).