<html>
<head>
<script src="jquery.js" type="text/javascript"></script>
</head>
<body>
<input type="radio" name="riskLib" value="yjw1">杨军威1<br/>
<input type="radio" name="riskLib" value="yjw2">杨军威2<br/>
<input type="button" id="Btn_riskLib" />
<script type="text/javascript">
$(document).ready(function(){
$("#Btn_riskLib").bind("click",function(){
var id =$(":radio:checked").val();
if(id==null){
alert("请选择一个!");
}else {
alert(id);
}
})
});
</script>
</body>
</html>