radio 在firefox下是getElementsByName 取值
<html>
<style>
</style>
<body>
<form>
<input type="radio" name="a" value="aa" class="radioClass" />aa
<input type="radio" name="a" value="a22" />a22
<input type="radio" name="a" value="aa33" />aa33
<input type="button" onclick="chk2()">
<input type="button" onclick="chk()">
<script language="JavaScript">
<!--
function chk(){
var obj = document.getElementsByName('a');
for (i=0;i<obj.length;i++){
if (obj[i].checked){
alert(obj[i].value);
return;
}
}
alert('你沒選');
}
function chk2(){
var obj = document.getElementsByName('a');
for (i=0;i<obj.length;i++){
if (obj[i].value=="a22"){
obj[i].checked=true;
return;
}
}
alert('你沒選');
}
//-->
</script>
</form>
</body>
</html>
<html>
<head>
<script type="text/javascript">
function createOrder()
{
coffee=document.forms[0].coffee
txt=""
for (i=0;i<coffee.length;++ i)
{
if (coffee[i].checked)
{
txt=txt + coffee[i].value + " "
}
}
document.getElementById("order").value="您訂購的咖啡帶有： " + txt
}
</script>
</head>
<body>
<p>你喜歡怎麼喝咖啡？</p>
<form>
<input type="checkbox" name="coffee" value="奶油">加奶油<br />
<input type="checkbox" name="coffee" value="糖塊">加糖塊<br />
<br />
<input type="button" onclick="createOrder()" value="傳送訂單">
<br /><br />
<input type="text" id="order" size="50">
</form>
</body>
</html>
<html>
<head>
<script type="text/javascript">
function check()
{
document.getElementById("radio1").checked=true
}
function uncheck()
{
document.getElementById("radio1").checked=false
}
</script>
</head>
<body>
<form>
<input type="radio" id="radio1" />
<input type="button" onclick="check()" value="Check radio button" />
<input type="button" onclick="uncheck()" value="Uncheck radio button" />
</form>
</body>
</html>