Re: check if radio is checked

On Jan 2, 2:09*pm, Ron Eggler <NORE... (AT) example (DOT) com> wrote:

Hi,

I would like to run a jvascript, checking if the radio button is checked.
My radio button looks like:

input type="radio" name="owned_business" value="yes"

and i would like to check it with this:

* * * * alert (document.myform.owned_business.checked);
* * * * if (document.myform.owned_business.checked == false)

but alert returns me "undefined" and i don't understand why, my form name
is "myform" and the name of the radio is "owned_business" so i'm not seeing
where i go wrong.
Can anyone help me?

There's something weird with Radio buttons. I believe you need to
iterate through the set, instead of grabbing the checked one. Try
something like this:

function get_checked_radio( radio, form ) {
for ( var i = 0; i < form.length; i++ ) {
var e = form.elements[i];
var ename = e.name;
if ( ename != radio ) continue;
if ( e.checked ) return e.value;
}
return "";
}

On Jan 2, 2:45*pm, Ron Eggler <NORE... (AT) example (DOT) com> wrote:

nolo contendere wrote:
On Jan 2, 2:09*pm, Ron Eggler <NORE... (AT) example (DOT) com> wrote:
Hi,

I would like to run a jvascript, checking if the radio button is checked.
My radio button looks like:

input type="radio" name="owned_business" value="yes"

and i would like to check it with this:

alert (document.myform.owned_business.checked);
if (document.myform.owned_business.checked == false)

but alert returns me "undefined" and i don't understand why, my form name
is "myform" and the name of the radio is "owned_business" so i'm not
seeing where i go wrong.
Can anyone help me?

There's something weird with Radio buttons. I believe you need to
iterate through the set, instead of grabbing the checked one. Try
something like this:

function get_checked_radio( radio, form ) {
* for ( var i = 0; i < form.length; i++ ) {
* * var e = form.elements[i];
* * var ename = e.name;
* * if ( ename != radio ) continue;
* * if ( e.checked ) return e.value;
* }
* return "";
}

But why can't i just simply check the elemet's property?
Seems simpler to me.

I agree with Anthony. The best and most appropriate input type for
your purpose is 'checkbox'.