Example Patterns

The list below contains some example patterns which you may find useful. There are many resources available on the Internet which provide additional examples.

Set Number of Alphanumeric Characters

[A-Za-z0-9]{1,15}

In the example above, the character limit is 15, suitable for use with NetBIOS naming. 

Email Address

^[0-9a-zA-Z]+([0-9a-zA-Z]*[-._+])*[0-9a-zA-Z]+@[0-9a-zA-Z]+([-.][0-9a-zA-Z]+)*([0-9a-zA-Z]*[.])[a-zA-Z]{2,6}$

IP Address

^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$

URL

(https?:\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\/?$

Dollar Value

^\$(\d{1,3}(\,\d{3})*|(\d+))(\.\d{2})?$

Positive Integer

^\d+$

Major Credit Cards (MC/VISA/AMEX)

^((4\d{3})|(5[1-5]\d{2})|(6011))-?\d{4}-?\d{4}-?\d{4}|3[4,7]\d{13}$

Password (4-8 characters requiring 1 upper and lower case, 1 digit, no spaces)

^(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?!.*\s).{4,8}$