<script type="text/javascript">
for(var i=0;i<20;i++)
document.write('<input name="radio" id="radio'+i+'" type="radio" value="'+i+'" />');
function getValue()
{
for(var i=0;i<20;i++)
if(document.getElementById("radio"+i).checked==true)
{
alert(document.getElementById("radio"+i).value);
break;
}
}
</script><a href="javascript:getValue()">取值</a>
{
var o=document.getElementsByName(obj);
var len=o.length;
for (var i=0;i<len ;i++ )
{
if( o[i].checked==true )
{
return o[i].value;
}
}
}