<INPUT type="radio" value="1" name="b">1
<INPUT type="radio" value="2" name="b">2
<INPUT type="radio" value="3" name="b">3
<INPUT type="button" value="Button" onclick="aa()">
<script language="javascript">
function aa()
{
var a=document.getElementsByName("b");
for (var i=0; i<a.length; i++) {
a[i].checked?alert(a[i].value):'';
}
}
</script>
<INPUT type="radio" value="2" name="b">2
<INPUT type="radio" value="3" name="b">3
<INPUT type="button" value="Button" onclick="aa()">
<script language="javascript">
function aa()
{
var a=document.getElementsByName("b");
for (var i=0; i<a.length; i++) {
a[i].checked?alert(a[i].value):'';
}
}
</script>
<INPUT type="radio" value="2" id="b2" name="b">2
<INPUT type="radio" value="3" id="b3" name="b">3
<INPUT type="button" value="Button" onclick="aa()">
<script language="javascript">
function aa()
{
alert(document.getElementById('b1').value);
}
</script>
楼主还有要注意一点,控件里面命名name的值是就用document.getElementsByName();而命名id值的话就使用document.getElementById().