get radio value problem

Question

id要唯一的，name可以多个一样
 alert(document.getElementsByName("o1")[0].getAttribute("value"));
 alert(document.getElementsByName("o1")[1].getAttribute("value"));
 alert(document.getElementsByName("o1")[2].getAttribute("value"));

Answer 1

You can use following functionfunction init() {
for(i=0;i<document.getElementsByName("o1").length;i++)
{
if(document.getElementsByName("o1")[i].checked)
{
 alert(document.getElementsByName("o1")[i].getAttribute("value"));
}
}
}
</script>