Rails - Jan 2006 - NOOB: Numeric only input...can it be done on client?

I was wondering if there''s a way to limit what a user is typing on the
keyboard to only valid numeric input. Is there a simple plugin or something
which would allow this? I guess with AJAX it could also be one. Has anyone
already solved this requirement? Thanks in advance.

 

James

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Javascript should get the job done.  A quick google for "numeric entry only
javascript" had this result... Might work well:

http://www.pbdr.com/vbtips/asp/JavaNumberValid.htm

On 1/17/06, James Ricci <james@riccinursery.com>
wrote:
>
>  I was wondering if there''s a way to limit what a user is typing
on the
> keyboard to only valid numeric input. Is there a simple plugin or something
> which would allow this? I guess with AJAX it could also be one. Has anyone
> already solved this requirement? Thanks in advance.
>
>
>
> James
>
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>
>
>

--
Ben Reubenstein
benr@x-cr.com
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Sure, and there''s no need to complicate it with a server call.  A
simple way
to do it is to define a string of characters (in your case, numbers), then
have each keystroke check that string for characters.  Something like this
would work:

var numerals = "0123456789";
function checkInput(myField) {

}

On 1/17/06, James Ricci <james@riccinursery.com>
wrote:
>
>  I was wondering if there''s a way to limit what a user is typing
on the
> keyboard to only valid numeric input. Is there a simple plugin or something
> which would allow this? I guess with AJAX it could also be one. Has anyone
> already solved this requirement? Thanks in advance.
>
>
>
> James
>
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>
>
>
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On 1/17/06, James Ricci <james@riccinursery.com>
wrote:
> I was wondering if there''s a way to limit what a user is typing on
the
> keyboard to only valid numeric input. Is there a simple plugin or something
> which would allow this? I guess with AJAX it could also be one. Has anyone
> already solved this requirement? Thanks in advance.
Keep in mind that even if you get this to work in the browser, your
server-side code should never trust this data to be in a valid format.
 You still need to do validation on the server.

As for your question, it seems like this would be pretty easy with
JavaScript and the onkeypress event handler.

-- James

Hah - oops, I hit "Enter" by accident.

I was going to type in a function, but Googling for "Javascript restrict
input" turns up a good example as is (although i''m not sure if
it''s the most
graceful):

http://www.felgall.com/jstip44.htm

- Jim

On 1/17/06, Jim Campbell <phong3d@gmail.com>
wrote:
>
> Sure, and there''s no need to complicate it with a server call.  A
simple
> way to do it is to define a string of characters (in your case, numbers),
> then have each keystroke check that string for characters.  Something like
> this would work:
>
> var numerals = "0123456789";
> function checkInput(myField) {
>
> }
>
> On 1/17/06, James Ricci < james@riccinursery.com> wrote:
> >
> >  I was wondering if there''s a way to limit what a user is
typing on the
> > keyboard to only valid numeric input. Is there a simple plugin or
something
> > which would allow this? I guess with AJAX it could also be one. Has
anyone
> > already solved this requirement? Thanks in advance.
> >
> >
> >
> > James
> >
> > _______________________________________________
> > Rails mailing list
> > Rails@lists.rubyonrails.org
> > http://lists.rubyonrails.org/mailman/listinfo/rails
> >
> >
> >
>
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Thanks very much for all the helpful advice everyone. 

 

James

 

  _____  

From: rails-bounces@lists.rubyonrails.org
[mailto:rails-bounces@lists.rubyonrails.org] On Behalf Of Jim Campbell
Sent: Tuesday, January 17, 2006 11:57 AM
To: rails@lists.rubyonrails.org
Subject: Re: [Rails] NOOB: Numeric only input...can it be done on client?

 

Hah - oops, I hit "Enter" by accident.

I was going to type in a function, but Googling for "Javascript restrict
input" turns up a good example as is (although i''m not sure if
it''s the most
graceful): 

http://www.felgall.com/jstip44.htm

- Jim

On 1/17/06, Jim Campbell < phong3d@gmail.com <mailto:phong3d@gmail.com>
>
wrote:

Sure, and there''s no need to complicate it with a server call.  A
simple way
to do it is to define a string of characters (in your case, numbers), then
have each keystroke check that string for characters.  Something like this
would work: 

var numerals = "0123456789";
function checkInput(myField) {

}

On 1/17/06, James Ricci < <mailto:james@riccinursery.com>
james@riccinursery.com> wrote:

I was wondering if there''s a way to limit what a user is typing on the
keyboard to only valid numeric input. Is there a simple plugin or something
which would allow this? I guess with AJAX it could also be one. Has anyone
already solved this requirement? Thanks in advance.

 

James


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Rails mailing list
Rails@lists.rubyonrails.org 
http://lists.rubyonrails.org/mailman/listinfo/rails



 

 

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