RegExLib.com - The first Regular Expression Library on the Web!

Please support RegExLib Sponsors

Sponsors

Expressions by User

   Displaying page 1 of 1 pages; Items 1 to 1
Title Test Details Pattern Title
Expression
[^A-Za-z0-9_@\.]|@{2,}|\.{5,}
Description
Used as a username validation script requires: 1. Allows All Alphanumeric characters & underscore 2. Allows One "@" character 3. Allows Five "." periods 4. Rejects spaces
Matches
user name | user#name | .....
Non-Matches
User_Name1 | username@foo.com | user.name@mail.foo.com
Author Rating: Not yet rated. Theo Tillotson
   Displaying page 1 of 1 pages; Items 1 to 1

Copyright © 2001-2018, RegexAdvice.com | ASP.NET Tutorials