Powerful masked input using only regular expression to define flexible input mask. Input validation as you type, auto completion and partial auto completion.

Regular expressions are patterns that provide a powerful way to search and replace in text. In JavaScript, they are available via the RegExp object, as well as being integrated in methods of strings.

If you’ve ever done any serious programming you’ll have run into something called regular expressions: … (abbreviated regex or regexp and sometimes called a rational expression) is a sequence of ...