[thelist] testing for empty in javascript

[Jeremy Weiss]

The page is at https://whatsmyhomevalue.com/membership_form.htm

We 'selling' zip codes to real estate agents.  The reason I want to be able
to remove one and have the total go down is b/c people tend to change their
mind.  An agent may want to purchase a several zip codes, but when they see
the total price they may decide they don't want so many zip codes and thus
they'll go back a remove a few of them.

The site isn't finished yet so don't let errors surprise you.

-Jeremy Weiss

-----Original Message-----
From: thelist-admin at lists.evolt.org
[mailto:thelist-admin at lists.evolt.org]On Behalf Of Tom Dell'Aringa
Sent: Tuesday, July 16, 2002 12:37 PM
To: thelist at lists.evolt.org
Subject: RE: [thelist] testing for empty in javascript


Jeremy, could you maybe take a step back and tell us what the page
needs to do? Adding up something, then turning around and removing it
is work you shouldn't have to do I'm guessing. Maybe show us the
whole page of code if its not too long, or give us a link, which is
better.

Tom

--- Jeremy Weiss <jweiss at cei.net> wrote:
> Okay, here's what I've got right now.
>
>
> <script LANGUAGE="JavaScript">
> var cost=0;
> function ChangeTotal() {
>    if(document.memberform.zip != "")
>    {
>       cost = cost + 1;
>       amountdue = cost * 79.95
>       document.memberform.amountdue.value = amountdue;
>    }
> }
> </script>
>
> <form name="memberform">
> <input type="text" name="zip" size="6"
> onChange="ChangeTotal();">&nbsp;
> <input type="text" name="zip" size="6"
> onChange="ChangeTotal();">&nbsp;
> <input type="text" name="zip" size="6"
> onChange="ChangeTotal();">&nbsp;<br>
> <input type="text" name="amountdue" size="20">
> </form>
>
>
> It works with the exception of two things.  1)When someone goes
> back and
> removes a zip code they typed in, it raises the total again.  I
> need a way
> to lower it in this instance.  2) The total needs to be formatted
> as
> currency, what's the easiest way to accomplish it?
>
> Sorry for all the remedial work I'm throwing out... think of it as
> a
> refresher course. ;)
>
> Thanks for all the help.
>
> -Jeremy Weiss
>
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=====
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http://www.pixelmech.com/

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