This pattern matches the US Postal Code format and captures the seperate parts; basic and +4.

Italian VAT

tests for valid social security numbers according to the social security administration. more specifically: -disallows a group to have all 0s -disallows first group to have all 6s -disallows a ssn to begin with 9 note that this does not test for issued ssn's. that would be impossible to implement h...

validates strings in time format HH:mm with hour in 24h format. only accepts up to 23:59

Separates media query into rule and content

validate an IP v4

Capture src attribute of HTML image tags

Replace non-ending string \n by the HTML tag

I am trying to extract the asp:label syntax using Regex but I am getting some error can some one help me

match any string outside of single or double quotes

negation

See if a string is in CamelCase format

Validates 00:00:00 to 23:59:59

Includes resource strings, taken from here: https://gist.github.com/dperini/729294

Check if brazilian names are imputed correctly. Ex: Paulo da Silva