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Groups > comp.lang.javascript > #18072

Re: ScreenName validation

From Eric Bednarz <bednarz@fahr-zur-hoelle.org>
Newsgroups comp.lang.javascript
Subject Re: ScreenName validation
Organization Eric Conspiracy Secret Labs
References <al347sFepchU1@mid.individual.net> <53ccd13b-a933-4bbc-ba0a-7061cc9064cd@4g2000yqv.googlegroups.com> <m28v807ec9.fsf@nntp.bednarz.nl> <r1que89eftmfejrieqstmo7bp1ra3e92rv@4ax.com>
Date 2013-01-11 20:35 +0100
Message-ID <m2hamnqzr4.fsf@nntp.bednarz.nl> (permalink)

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Jeff North <jnorthau@yahoo.com.au> writes:

> Eric Bednarz <bednarz@fahr-zur-hoelle.org> wrote:
>
>>| Scott Sauyet <scott.sauyet@gmail.com> writes:
>>| 
>>| >     /^[a-z\.\_\-]{2,12}$/
>>| 
>>| Uh, what's up with all those backslashes?

I'm afraid that was a rethorical question.

> The dot ( .* ) and hyphen ( [a-Z] ) characters are used within regexp.
> To check for the actual characters they need to be escaped (preceded
> with backslash).

// TODO homework

The only character that *must* to be escaped in a character class is the
escape character itself. Unescaped square brackets tend to confuse
newbies, so I would make an exception there, but otherwise regular
expressions are hard enough to read without user generated noise.

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Thread

ScreenName validation "Mel Smith" <med_cutout_syntel@aol.com> - 2013-01-08 10:44 -0700
  Re: ScreenName validation Scott Sauyet <scott.sauyet@gmail.com> - 2013-01-08 11:02 -0800
    Re: ScreenName validation "Mel Smith" <med_cutout_syntel@aol.com> - 2013-01-08 13:05 -0700
    Re: ScreenName validation Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2013-01-11 01:28 +0100
      Re: ScreenName validation Jeff North <jnorthau@yahoo.com.au> - 2013-01-11 12:23 +1100
        Re: ScreenName validation Stefan Weiss <krewecherl@gmail.com> - 2013-01-11 03:38 +0100
        Re: ScreenName validation Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2013-01-11 20:35 +0100
          Re: ScreenName validation Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2013-01-11 21:22 +0100
            Re: ScreenName validation Stefan Weiss <krewecherl@gmail.com> - 2013-01-11 22:09 +0100
              Re: ScreenName validation Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2013-01-11 23:23 +0100
                Re: ScreenName validation Stefan Weiss <krewecherl@gmail.com> - 2013-01-12 00:26 +0100
                Re: ScreenName validation Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2013-01-12 00:54 +0100
              Re: ScreenName validation Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2013-01-12 00:22 +0100
          Re: ScreenName validation Scott Sauyet <scott.sauyet@gmail.com> - 2013-01-11 13:29 -0800
            Re: ScreenName validation Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2013-01-12 02:31 +0100

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