js控制关闭layui的switch开关

<input class="switch" type="checkbox" lay-skin="switch" lay-filter="mode" lay-text="开|关">
<script type="text/javascript">
    layui.use('form', function () {
        var form = layui.form;
        //开关
        form.on('switch(mode)', function (data) {
         var swithcData = data;
            var status = 0;
            if (!data.elem.checked) {
                status = 1;
            }
            var json = {"id":{$vo.id},"status": status};
            $.post("后端请求地址", json, function (data) {
                    if(data!=null){
                    mui.alert('该支付通道已关闭，暂时无法使用', '提示');
                    //修改switch开关为关闭状态
                    var em = $(swithcData.othis[0]);
                    swithcData.othis[0].classList.remove('layui-form-onswitch');
                    em.children('em').text('关');
                }
            });
        });
    });