Re: [OT] Regular Expressions

This WebDNA talk-list message is from

2003

It keeps the original formatting. numero = 49879
interpreted = N
texte = Thanks John!That worked perfectly!I DID remove the 4 from the end in order to accommodate some of new longdomains like .museum, etc.On 4/29/03 3:32 PM, John Peacock wrote:> Clint Davis wrote:>> I'm trying to use a regular expression in a javascript to test an email>> input field in a form like this:>> >> var goodEMAIL = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/>> > > You will need to escape the period when it does not appear inside a set []> since it is otherwise a match any single character term. Try this instead:> > var goodEMAIL = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+\.)+([a-zA-Z0-9]{2,4})+$/> >> I thought this script was supposed to act as specified above, but I'm able>> to enter something like a@aaaa with no problems, but a@a.a fails. The 2-4>> character check at the end doesn't appear to be working. I'm sure one of the>> veteran C programmers can answer this with no problem.>> > > The reason that a@a.a fails is that the 2-4 check _is_ working; you cannot> have > fewer than two characters in your TLD (corresponding to the ISO country> codes). > However, I think the {2,4} should be changed to {2,} since there may now be> domains longer than 4 characters (e.g. .museum). The reason that a@aaaa is> working is that you are actually matching it like this:> > (a)@(aa)(aa)> > because you didn't escape the period.---------------------------------------------------------------------Clint DavisWebmaster / Interactive Media SpecialistGray Loon Marketing Group, Inc. http://www.grayloon.com204 Main Street | Evansville, IN 47708 | Phone:812-422-9999----------------------------------------------------------------------------------------------------------------------------------This message is sent to you because you are subscribed to the mailing list .To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://webdna.smithmicro.com/ Associated Messages, from the most recent to the oldest:

Re: [OT] Regular Expressions (Clint Davis 2003)
Re: [OT] Regular Expressions (John Peacock 2003)
[OT] Regular Expressions (Clint Davis 2003)

Thanks John!That worked perfectly!I DID remove the 4 from the end in order to accommodate some of new longdomains like .museum, etc.On 4/29/03 3:32 PM, John Peacock wrote:> Clint Davis wrote:>> I'm trying to use a regular expression in a javascript to test an email>> input field in a form like this:>> >> var goodEMAIL = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/>> > > You will need to escape the period when it does not appear inside a set []> since it is otherwise a match any single character term. Try this instead:> > var goodEMAIL = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+\.)+([a-zA-Z0-9]{2,4})+$/> >> I thought this script was supposed to act as specified above, but I'm able>> to enter something like a@aaaa with no problems, but a@a.a fails. The 2-4>> character check at the end doesn't appear to be working. I'm sure one of the>> veteran C programmers can answer this with no problem.>> > > The reason that a@a.a fails is that the 2-4 check _is_ working; you cannot> have > fewer than two characters in your TLD (corresponding to the ISO country> codes). > However, I think the {2,4} should be changed to {2,} since there may now be> domains longer than 4 characters (e.g. .museum). The reason that a@aaaa is> working is that you are actually matching it like this:> > (a)@(aa)(aa)> > because you didn't escape the period.---------------------------------------------------------------------Clint DavisWebmaster / Interactive Media SpecialistGray Loon Marketing Group, Inc. http://www.grayloon.com204 Main Street | Evansville, IN 47708 | Phone:812-422-9999----------------------------------------------------------------------------------------------------------------------------------This message is sent to you because you are subscribed to the mailing list .To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://webdna.smithmicro.com/ Clint Davis

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Re: [OT] Regular Expressions

2003

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