[thelist] javascript numbers with decimals

Scott Brady dsbrady at gmail.com
Tue May 6 09:17:24 CDT 2008

On Tue, May 6, 2008 at 7:26 AM, Daniel Kessler <danielk at umd.edu> wrote:
> I'm trying to ensure that all characters entered into a field are
>  numbers AND/OR a decimal.  Valid entries are similar to: 521,
>  521.44, .44, 521.4    Invalid entries would be: $521, 52o
>  I'm working from code that works in another library and I have it
>  removing all numbers, but it won't allow a decimal.  I'd like to
>  understand what the code is doing and how to also allow a decimal.
>  Here's the code that I have so far:
>  regEx = /\D/g; // String to remove any characters that are not numbers
>  filteredField=field.value.replace(regEx,"") // text field numeric
>  characters only

Is there a reason you can't just use the isNaN() function to verify
that it's numeric?


Scott Brady

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