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

Please support RegExLib Sponsors

Sponsors

Regular Expression Details

Title Test Find Pattern Title
Expression
^1?[1-9]$|^[1-2]0$
Description
Matches a whole number between 1 and 20 inclusively
Matches
1 | 11 | 20
Non-Matches
0 | 21
Author Rating: Not yet rated. Daniel Pickles
Source
Your Rating
Bad Good

Enter New Comment

Title

Name

Comment

Spammers suck - we apologize. Please enter the text shown below to enable your comment (not case sensitive - try as many times as you need to if the first ones are too hard):

Existing User Comments

Copyright © 2001-2025, RegexAdvice.com | ASP.NET Tutorials