[Cialug] Javascript help

[Kevin C. Smith]

I thought the same thing, and think I tried exactly what you suggest
but something didn't work right. I forget exactly. So, I went and go
funky trying to get it to work. I will revisit this and see if I just
missed something.

> I don't do javascript, but with such a small number of acceptable
> fractions, why not just enumerate them?
>
> pattern = /^[0-9]*\.(0|00|25|5|50|75)$/;
>
> Why all the square brackets?  Does the javascript regexes need them?
>
> Kendall
>
>
> On 11/4/05, Kevin C. Smith <kevin at linuxsmith.com> wrote:
>> This is by first attempt at this, so be easy on me.
>>
>> I'm trying to come up with a javascript function to check an html form
>> input field. I've got most of it but I'm have trouble with the number
>> after
>> the ".". I'm trying to match number in the form of 12.0, 12.5, 12.00,
>> 12.25, 12.50, 12.75 for example. I've got the following:
>>
>> pattern = /^[0-9]*\.[0][0]{1}$|[2][5]{1}$|[5][0]{1}$|[7][5]{1}$/;
>>
>> which matches 12.00, 12.25, 12.50, 12.75 (example), but when I attempt
>> to
>> also
>> match 12.0 or 12.5 I open the door to 12.255555 which I don't want.
>>
>> I've also noticed the it accecpt stuff like "2,5.25" which I also don't
>> want.
>>
>> So far I have this:
>>
>> <script type="text/javascript">
>> function        checknumber(field,limit)
>> {
>>         pattern =
>> /^[0-9]*\.[0][0]{1}$|[2][5]{1}$|[5][0]{1}$|[7][5]{1}$/;
>>         if(pattern.test(field.value)==false)
>>         {
>>                 alert("Please use proper format - 1:15 PM is 13.25");
>>                 field.value = 0;
>>         }
>>         else
>>         {
>>                 if(field.value > limit)
>>                 {
>>                         alert("Out of Range! The range is 0.25-24.0");
>>                         field.value = 0;
>>                 }
>>         }
>> }
>> </script>
>>
>> Any help would be great.
>> Thanks,
>>
>> --
>> Kevin C. Smith
>>
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-- 
Kevin C. Smith