<script language="javascript">
var selectedRadio = document.forms[0].elements["radio1"];
selectedRadio[0].checked=true;
</script>
var selectedRadio = document.forms[0].elements["radio1"];
selectedRadio[0].checked=true;
</script>
当property的值等于value时,就是选定状态
<script language="javascript">
var radioo = document.all['radioT'] ;
if(!radioo[0].checked && !radioo[1].checked && !radioo[2].checked){
radioo[0].checked = true;
}
</script>
<input type="radio"/>