layui获取弹窗table选中值

   var iframeWindow = window['layui-layer-iframe' + index];
                            var checkStatus = iframeWindow.layui.table.checkStatus('NF-system-selectUser')
                            checkData = checkStatus.data; //得到选中的数据
                            if (checkData.length === 0) {
                                return layer.msg('请选择数据');
                            }
​
​完整代码块如下：
​
​
​ add: function () {
                    layer.open({
                        type: 2
                        , title: '选择用户'
                        , content: '/System/UserInfor/SelectUser'
                        , maxmin: true
                        , area: ['60%', '80%']
                        , btn: ['确定', '取消']
                        , btnAlign: 'c'
                        , skin: "layer-ext-myskin"
                        , yes: function (index, layero) {
                           
                            var iframeWindow = window['layui-layer-iframe' + index];
                            var checkStatus = iframeWindow.layui.table.checkStatus('NF-system-selectUser')
                            checkData = checkStatus.data; //得到选中的数据
                            if (checkData.length === 0) {
                                return layer.msg('请选择数据');
                            }
​}
​