Make checkboxes work like radio buttons but...

[shortbackandsides.no@spam.hairdresser.net]

Here's a working code fragment out of a form.
One checkbox is checked the other isn't.
When you change the status of one the other changes too.

<input type="checkbox" name="nlbox1" value="9" checked
onClick="docume nt.signup.nlbox 2.checked=!docu ment.signup.nlb ox2.checked;">

<input type="checkbox" name="nlbox2" value="8"
onClick="docume nt.signup.nlbox 1.checked=!docu ment.signup.nlb ox1.checked;">

OK now the problem (and I expect you are asking, why not just use
radio buttons?)

The form gets sent to someone else's script on a server I can't
modify. Their version of the form looked like this:

<input type="checkbox" name="nlbox[1]" value="9" >
<input type="checkbox" name="nlbox[2]" value="8">

That allowed neither or both boxes to be checked. The problem is if I
try to use:

<input type="checkbox" name="nlbox[1]" value="9" checked
onClick="docume nt.signup.nlbox[2].checked=!docum ent.signup.nlbo x[2].checked;">

<input type="checkbox" name="nlbox[2]" value="8"
onClick="docume nt.signup.nlbox[1].checked=!docum ent.signup.nlbo x[1].checked;">

I get an error. Mozilla says:
document.signup .nlbox has no properties

MSIE says:
document.signup .nlbox.1 is null or not an object

Any ideas?

Incidentally
<input type="radio" name="nlbox[1]" value="9" >
<input type="radio" name="nlbox[2]" value="8">
won't work because as the name differs they don't operate as a pair.

[Lee]

Re: Make checkboxes work like radio buttons but...

shortbackandsid es.no@spam.hair dresser.net said:
[color=blue]
>The problem is if I try to use:
>
><input type="checkbox" name="nlbox[1]" value="9" checked
>onClick="docum ent.signup.nlbo x[2].checked=!docum ent.signup.nlbo x[2].checked;">
>
><input type="checkbox" name="nlbox[2]" value="8"
>onClick="docum ent.signup.nlbo x[1].checked=!docum ent.signup.nlbo x[1].checked;">
>
>I get an error. Mozilla says:
>document.signu p.nlbox has no properties
>
>MSIE says:
>document.signu p.nlbox.1 is null or not an object
>
>Any ideas?[/color]

http://www.jibbering.com/faq/#FAQ4_25

[Rob]

Re: Make checkboxes work like radio buttons but...

On 23 Jun 2004 13:31:31 -0700, Lee <REM0VElbspamtr ap@cox.net> wrote:
[color=blue][color=green]
>>
>>MSIE says:
>>document.sign up.nlbox.1 is null or not an object
>>
>>Any ideas?[/color]
>
>
>http://www.jibbering.com/faq/#FAQ4_25[/color]

Excellent, thanks it works just fine now.

I'll just go and write out 100 times "ALWAYS check the FAQ first!"

[Lasse Reichstein Nielsen]

Re: Make checkboxes work like radio buttons but...

Rob <public.mail@sh effield.port995 .com> writes:
[color=blue]
> I'll just go and write out 100 times "ALWAYS check the FAQ first!"[/color]

for (var i = 0; i < 100; i++) {
document.write( "<p>ALWAYS check the FAQ first!<\/p>");
}

/L ':P'
--
Lasse Reichstein Nielsen - lrn@hotpop.com
DHTML Death Colors: <URL:http://www.infimum.dk/HTML/rasterTriangleD OM.html>
'Faith without judgement merely degrades the spirit divine.'