[Javascript] problem of only one radio button

[Abraham Liu]

Hi Rodney Myers,
Thank your answer. I did what you said. But when I check the length of the 
checkbox. It still show undefined instead of 1. Why?
Can you help me again?
Thanks.
Abe Liu

I have the codes as following,

.
.
function display_checkQty() {
     var tot = 0;
     var val = 0;

     alert("sel-length= "+placeOrder.sel.length);
     .
     .
}

.
.
if (rsa.length == 1) {
%>
                      <td align="center" bordercolor="#FFFFFF" width="44" 
height="15" <%= bgc %>><input type="checkbox" name="sel" 
value="<%=tknAndUnits%>" onClick="display_checkQty()"></td>
<%
   } else {
%>
                      <td align="center" bordercolor="#FFFFFF" width="44" 
height="15" <%= bgc %>><input type="radio" name="sel" 
value="<%=tknAndUnits%>" onClick="display_radioQty()"></td>
<%
   }




>From: Rodney Myers <rodney at aflyingstart.net>
>Reply-To: javascript at LaTech.edu
>To: javascript at LaTech.edu
>Subject: Re: [Javascript] problem of only one radio button
>Date: Fri, 20 Jul 2001 15:01:45 +0100
>
> > Is it true that radio button will function correctly only at least two 
>of them
>exist in form ?
>YES
>
> > Is it true that checkbox will function correctly only at least two of 
>them
>exist in form ?
>NO, One checkbox is OK
>
>I advise that server side you make a count of the rows found.
>If only one you write a checkbox, and appropriate script
>If 2 or more write radio buttons.
>
>The radio buttons array length returns an error if there is only one RB.
>
>hth
>
>Rodney
>
>
>Abraham Liu wrote:
>
> > Hi,
> > In my jsp program, I select a number of rows from database table, then
> > display them in form table. Each row attachs a radio button, So users 
>can
> > select one of rows and do further process.
> > The reason I use radio button is that I concatenate 3 table columns and
> > store them in "value" property of button. When user click button, I use
> > javascript "split" function to get these 3 columns back. Everything 
>seemed
> > working just fine. But I realized that if only one row got selected 
>which
> > meaned only one button exists also, then the fuction of radio button 
>didn't
> > worked and "split" won't work either. I switched to checkbox, I got the 
>same
> > result.
> >
> > Is it true that radio button and checkbox will function correctly only 
>at
> > least two of them exist in form ?
> > In my case, the number of radio button are genarated dynamically 
>depending
> > on the number rows being selected. So what can I do ? Do I have some 
>other
> > alternative ways ?
> > I will be appreciated some kindly help.
> > Thank you.
> > Abe Liu
> >
> > _________________________________________________________________
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>
>--
>Shop at ssistant Add-ons and Developer Workshops
>http://www.aflyingstart.net/addons/
>
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>Call 01256 880770
>
>Rodney Myers
>Based in Oxford, England
>Technical Director, Shop at ssistant eCommerce Solutions
>
>
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