layui radio性别单选框赋值方法

<div class="layui-inline">
 <label class="layui-form-label">性别</label>
 <div class="layui-input-block">
 <input type="radio" name="sex" id="sex" value="1" title="男" >
 <input type="radio" name="sex" id="sex" value="2" title="女"> 
 </div>
 </div>

 layui.use('form', function () {
 var $ = layui.jquery, form = layui.form;
 $.ajax({
 type: "post",
 url: "/Shared/GetPiDate",
 data: {},
 async: true,
 dataType: "json",
 success: function (data) {
 $("input[name=sex][value=1]").attr("checked", data.UserSex == 1 ? true : false);
 $("input[name=sex][value=2]").attr("checked", data.UserSex == 2 ? true : false);
 form.render(); //更新全部 
 }
 }
 });