Question

jquery怎么判断单选框有没选中

Answer 1

<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<script src="http://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script>
<input type='radio' value='yes' name='woaini'>yes<br>
<input type='radio' value='no' name='woaini'>no
<script type="text/javascript">
function is_checked(){
    var diy_val = $('input:radio[name="woaini"]:checked').val();
    if(!diy_val){
        alert('没有选中！')
    }else{
        alert('选中了：'+diy_val)
    }
}
is_checked();
$('input:radio[name="woaini"]').click(function(){is_checked()});
</script>

Answer 2

checked是否为true