layui 父页面获取子页面的数据

layer.open({
    title: '选择商品',
    type: 2,
    area:['70%','600px'],
    content: ''+prefix +'/addGoods?supplier='+suppliers+'&depot='+stock+'',
    btn: ['确定', '关闭'],
    yes: function(index,layero ){
        var body = layer.getChildFrame('body', index);
        var  data=window[layero.find('iframe')[0]['name']].totalData;
        console.log(data);
        layer.close(index);
    }
});