weui 弹框中的单选效果

<!--性别修改弹框-->
                    <div class="weui_dialog_alert" id="doctorSexDialog" style="display: none;">
                        <div class="weui_mask"></div>
                        <div class="weui_dialog">
                            <div class="weui_dialog_hd"><strong class="weui_dialog_title">医生性别</strong></div>
                            <div class="weui_dialog_bd">
                                <!--选择性别-->
                                <div class="weui-cells weui-cells_radio">
                                    <label class="weui-cell weui-check__label" for="r1">
                                        <div class="weui-cell__bd">男</div>
                                        <div class="weui-cell__ft">
                                            <input required="" type="radio" class="weui-check" name="sex" value="男" id="r1" tips="请选择性别">
                                                <span class="weui-icon-checked"></span>
                                        </div>
                                    </label>
                                    <label class="weui-cell weui-check__label" for="r2">
                                        <div class="weui-cell__bd">女</div>
                                        <div class="weui-cell__ft">
                                            <input type="radio" name="sex" class="weui-check" value="女" id="r2">
                                                <span class="weui-icon-checked"></span>
                                        </div>
                                    </label>
                                </div>
                                <!--选择性别-->
                            </div>
                            <div class="weui_dialog_ft">
                                <div id="saveDoctorSex" class="weui_btn_dialog primary">确定</div>
                            </div>
                        </div>
                    </div>

$('#saveDoctorSex').click(function(){
        var doctorSex = $("input[name='sex']:checked").val();
        console.log("3416456" + doctorSex);

        $('#doctorSexShow').html(doctorSex);
    });