[Cialug] Javascript help

[Dave Weis]

Sorry for being dense but just use a couple dropdowns, one 0-23 and one 
with 00 15 30 45.

On Fri, 4 Nov 2005, Kevin C. Smith wrote:

> 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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>>>
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>>
>
>
>

-- 
Dave Weis             "I believe there are more instances of the abridgment
djweis at sjdjweis.com   of the freedom of the people by gradual and silent
                       encroachments of those in power than by violent
                       and sudden usurpations."- James Madison