点击免费没有变化，点击收费出现输入框

<li>    <label class="feiyonglabel">活动费用</label>    <div class="textbox textbox2">        <label><input type="radio" name="hdprice" data-type="1" class="hdprice"> 免费</label>        <label id="charge" data="on"><input type="radio" name="hdprice" class="hdprice" value="1" data-type="2"> 收费</label>    </div>    <div class="feiyong"><input class="" type="text"> 元/每人</div></li><script>    $(‘.hdprice‘).click(function(){        var attr = $(this).attr(‘checked‘);        if($(this).attr(‘data-type‘)==‘2‘){            if(attr==‘checked‘){                $(‘.feiyong‘).css(‘visibility‘,‘visible‘);            }        } else{            $(‘.feiyong‘).css(‘visibility‘,‘hidden‘);        }    });</script>