Re: RegExp irregularity in JScript

From: Roland Hall (nobody_at_nowhere)
Date: 03/04/04 

Date: Thu, 4 Mar 2004 05:41:15 -0600

: "Bryan Donaldson" wrote in message
news:%23uBdzXVAEHA.916@tk2msftngp13.phx.gbl...
: We have a web page on which we're trying to validate an entry, and we're
: using Regular Expressions to do it. We've implemented a test page when
: takes a pattern and an string, and tells us whether the string matches the
: pattern when the user clicks a button.
:

<!--SNiP-->

: But - when we validate some strings using this code, we're not getting the
: behavior we expect.
:
: For exampe, a password-validating pattern such as (has to be between 4 and
8
: characters, containing at least digit, one lower case and one upper case
: letter) would be
: ^(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{4,8}$
:
: Now, when we use the test value
:
: Expression : aA1234 we get a successful match.
:
: Expression : aA123 is NOT a match (by the logic above).
:
: Expression : 1234aA is NOT a match..

-=[Please only use plain text when posting to newsgroups.]=-

Try this:

http://guysare.us/lab/bryandonaldson.html?str=aA1234
http://guysare.us/lab/bryandonaldson.html?str=aA123
http://guysare.us/lab/bryandonaldson.html?str=1234aA

or try your own string to test...

HTH... 

-- 
Roland Hall
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