<script language="javascript">
function CheckInput(obj)
{
for (var i=0; i < obj.rdo.length; i++)
{
if (obj.rdo[i].checked)
return true;
}
alert("You must select one");
return false;
}
</script>
<form onsubmit="return CheckInput(this);" action="http://www.cnn.com">
<input type="radio" name="rdo" value="0">0<br>
<input type="radio" name="rdo" value="1">1<br>
<input type="submit">
</form>
function CheckInput(obj)
{
for (var i=0; i < obj.rdo.length; i++)
{
if (obj.rdo[i].checked)
return true;
}
alert("You must select one");
return false;
}
</script>
<form onsubmit="return CheckInput(this);" action="http://www.cnn.com">
<input type="radio" name="rdo" value="0">0<br>
<input type="radio" name="rdo" value="1">1<br>
<input type="submit">
</form>
2:在action="http://www.cnn.com中有没有自己要得数据没有则返回