Checkbox value

[Ron]

I have an HTML page, that calls an ASP javascript page on "Submit".
Everything works correctly except that I can't get the value of the
checkboxes. I've been trying code like this:

var s = "Off"
if (Request.Form(" EmailCbx").Chec ked == true)
{s = Request.Form("E mailCbx").name}

No matter what I do (I've tried several other things too) the value always
returns as "Off" What am I doing wrong?

Also, is there some way to get values from all my checkboxes that are
checked?

[RobG]

Re: Checkbox value

Ron wrote:[color=blue]
> I have an HTML page, that calls an ASP javascript page on "Submit".
> Everything works correctly except that I can't get the value of the
> checkboxes. I've been trying code like this:
>
> var s = "Off"
> if (Request.Form(" EmailCbx").Chec ked == true)[/color]

What does - Request.Form("E mailCbx") - return?

[color=blue]
> {s = Request.Form("E mailCbx").name}
>
> No matter what I do (I've tried several other things too) the value always
> returns as "Off" What am I doing wrong?[/color]

If - Request.Form("E mailCbx") - returns a reference to a checkbox then
it will have a 'checked' property (note the capitalisation) .

You don't have to explicitly test against 'true'. The checked
property's value is a boolean:

if ( Request.Form("E mailCbx").check ed ) {
// it's checked
}

[color=blue]
>
> Also, is there some way to get values from all my checkboxes that are
> checked?[/color]

Yes. Loop through all of them and test their checked property. If it's
true, get the checkbox's value. Supposing 'formA' is the name of your
form, then:

var el, els = document.forms['formA'].elements;
for (var i=0, len=els.length; i<len; ++i){
el = els[i];
if ('checkbox' == el.type && el.checked){
// el is a reference to a checked checkbox
alert('Checkbox ' + el.name + ' is checked');
}
}




--
Rob

[Ron]

Re: Checkbox value

Thanks Rob, this will be very helpful, but the code still isn't working.
Here's what I tried:

var s = "Off"
if (Request.Form(" EmailCbx").Chec ked)
{s = Request.Form("E mailCbx").name}

Maybe this is a good clue. When I try this:

alert(Request.F orm("SoftwareCb x").name);

I get an error: "Object expected" on that line. Does that mean anything
important?


"RobG" <rgqld@iinet.ne t.au> wrote in message
news:BsuLf.522$ Nv4.80316@news. optus.net.au...[color=blue]
> Ron wrote:[color=green]
>> I have an HTML page, that calls an ASP javascript page on "Submit".
>> Everything works correctly except that I can't get the value of the
>> checkboxes. I've been trying code like this:
>>
>> var s = "Off"
>> if (Request.Form(" EmailCbx").Chec ked == true)[/color]
>
> What does - Request.Form("E mailCbx") - return?
>
>[color=green]
>> {s = Request.Form("E mailCbx").name}
>>
>> No matter what I do (I've tried several other things too) the value
>> always returns as "Off" What am I doing wrong?[/color]
>
> If - Request.Form("E mailCbx") - returns a reference to a checkbox then
> it will have a 'checked' property (note the capitalisation) .
>
> You don't have to explicitly test against 'true'. The checked property's
> value is a boolean:
>
> if ( Request.Form("E mailCbx").check ed ) {
> // it's checked
> }
>
>[color=green]
>>
>> Also, is there some way to get values from all my checkboxes that are
>> checked?[/color]
>
> Yes. Loop through all of them and test their checked property. If it's
> true, get the checkbox's value. Supposing 'formA' is the name of your
> form, then:
>
> var el, els = document.forms['formA'].elements;
> for (var i=0, len=els.length; i<len; ++i){
> el = els[i];
> if ('checkbox' == el.type && el.checked){
> // el is a reference to a checked checkbox
> alert('Checkbox ' + el.name + ' is checked');
> }
> }
>
>
>
>
> --
> Rob[/color]

[RobG]

Re: Checkbox value

Ron wrote:[color=blue]
> Thanks Rob, this will be very helpful, but the code still isn't working.[/color]

Please don't top post. Trim quotes and put replies immediately below
the quote they refer to.

[color=blue]
> Here's what I tried:
>
> var s = "Off"
> if (Request.Form(" EmailCbx").Chec ked)
> {s = Request.Form("E mailCbx").name}[/color]

As I said previously, find out what - Request.Form("E mailCbx") -
returns. Insert the following immediately before the 'if' statement and
report what happens:


alert( typeof Request ); // 'function' or 'object' ?
alert( typeof Request.Form ); // 'function' or 'object' ?
var x = Request.Form('E mailCbx');
alert( typeof x ); // 'object' ?
alert( x.name ); // 'EmailCbx' ?
return;


If any of the above returns - undefined - or gives something
unexpected, then that is your problem (or at least part of it).

[color=blue]
> Maybe this is a good clue. When I try this:
>
> alert(Request.F orm("SoftwareCb x").name);
>
> I get an error: "Object expected" on that line. Does that mean anything
> important?[/color]

Yes. It means an object was expected but one wasn't returned. However,
without a bit more information or debugging I can't tell what it was
expected an object but didn't get one. There may also be more errors
after that point.

[...]

--
Rob

[Matt Kruse]

Re: Checkbox value

Ron wrote:[color=blue]
> Thanks Rob, this will be very helpful, but the code still isn't
> working. Here's what I tried:
> var s = "Off"
> if (Request.Form(" EmailCbx").Chec ked)
> {s = Request.Form("E mailCbx").name}[/color]

I think Rob missed the point that this is ASP javascript. Meaning,
server-side. Right?

If that's true, then the .checked and .name properties won't exist.
If you have this:

<input type="checkbox" name="EmailCbx" value="Yes">

then if it's checked, Request.Form("E mailCbx") will contain "Yes".
If it's not checked, then it won't be submitted at all, and
Request.Form("E mailCbx") will be null or empty.
(I'm not sure about ASP/javascript specifics, since I've never used it)

Hope that helps.

--
Matt Kruse

http://www.JavascriptToolbox.com

http://www.AjaxToolbox.com

[Ron]

Re: Checkbox value

Insert the following immediately before the 'if' statement and[color=blue]
> report what happens:
>
>
> alert( typeof Request ); // 'function' or 'object' ?
> alert( typeof Request.Form ); // 'function' or 'object' ?
> var x = Request.Form('E mailCbx');
> alert( typeof x ); // 'object' ?
> alert( x.name ); // 'EmailCbx' ?
> return;[/color]


I added the code after the if statement. When I try to tun it, it stops on
the "return" with a message:

Microsoft JScript compilation error '800a03fa'
'return' statement outside of function

/sendmail.asp, line 23

return;

[RobG]

Re: Checkbox value

Matt Kruse wrote:[color=blue]
> Ron wrote:
>[color=green]
>>Thanks Rob, this will be very helpful, but the code still isn't
>>working. Here's what I tried:
>>var s = "Off"
>>if (Request.Form(" EmailCbx").Chec ked)
>>{s = Request.Form("E mailCbx").name}[/color]
>
>
> I think Rob missed the point that this is ASP javascript. Meaning,
> server-side. Right?[/color]

Aggggh. I assumed a Request object had been implemented client-side and
that is what was being called.

[...]


--
Rob

[Ron]

Re: Checkbox value

Matt,

Thank you very much! That was the problem. Thanks to Rob too.

"Matt Kruse" <newsgroups@mat tkruse.com> wrote in message
news:dtm34m0f31 @news2.newsguy. com...[color=blue]
> Ron wrote:[color=green]
>> Thanks Rob, this will be very helpful, but the code still isn't
>> working. Here's what I tried:
>> var s = "Off"
>> if (Request.Form(" EmailCbx").Chec ked)
>> {s = Request.Form("E mailCbx").name}[/color]
>
> I think Rob missed the point that this is ASP javascript. Meaning,
> server-side. Right?
>
> If that's true, then the .checked and .name properties won't exist.
> If you have this:
>
> <input type="checkbox" name="EmailCbx" value="Yes">
>
> then if it's checked, Request.Form("E mailCbx") will contain "Yes".
> If it's not checked, then it won't be submitted at all, and
> Request.Form("E mailCbx") will be null or empty.
> (I'm not sure about ASP/javascript specifics, since I've never used it)
>
> Hope that helps.
>
> --
> Matt Kruse
> http://www.JavascriptToolbox.com
> http://www.AjaxToolbox.com
>
>[/color]