asked on

for loop checking radio button

hi all,

i have some html with radio buttuns

I'm using a javscript for loop to loop through them all to see which one is checked.

What I am finding is if there is only ONE radio buton, even though i click it the javascript isn't recognising it's checked

for (var i = 0; i < document.forms['radio'].test.length; i++) {
if (document.forms['radio'].test[i].checked) {
alert ('we checked one');
return false;
}
}

so i have one radion button on a form, clicking it so it's checked butt it's not going into the loop

thanks for any help

russhuntington

Can you post the full hmtl? It will help us idenitify the problem.

dalecon

ASKER

<html>

<head>

<script language="javascript">

      function testchecked()
     {

            alert ('in fucntion');

            for (var i = 0; i < document.forms['radio'].radiotest.length; i++) {

                        alert ('in for loop');

                  if (document.forms['radio'].radiotest[i].checked) {

                        alert ('in if');

                  }

            }
     }

</script>

</head>

<form name="find" action="" method="post">
<td align="left">
                        <input name="Submit" type="button" class="button" value="click" onClick="javascript:testchecked()">
              </td>
</form>

<table width="100%" border="0" cellpadding="1" cellspacing="0">
<form name="radio">
<tr>
<td width="20%">aaa</td>
<td width="15%">bbb</td>
<td width="20%">ccc</td>
<td width="40%" align="left" ><input type="radio" name="radiotest" value="1234"></td>
</tr>
</form>
</table>

</html>

dalecon

ASKER

if i do alert( document.forms['radio'].radiotest.length);

it comes up with undefined, even though there is a radiotest

ASKER CERTIFIED SOLUTION

HonorGod

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HonorGod

btw, when you only have one matching value, the result of the reference is not an array. So with only one "radiotest" input field, this

document.forms[ 1 ].radiotest

references the one and only matching item in the document

SasDev

I've been looking for a solution to this problem of mine and was able to attain a resolution with the help of the "Accepted Solution" in this thread.

Thanks 'HonorGod', your solution helped me!

HonorGod

SasDev: Good. I'm glad to hear it.