layer打开弹窗时传递参数

layer.open({
    type: 2,
    title: '预览',
    shadeClose: true,
    shade: 0.8,
    area: ['380px', '90%'],
    content: '/cms/admin/preview',//iframe的url
    success:function (dom) {
        let $iframeDom=$(dom[0]).find("iframe").eq(0).contents();
        $iframeDom.find(".content").html('内容或者html')  
    }
});

var index = layer.open({
    title: '编辑用户',
    type: 2,
    shade: 0.2,
    maxmin: true,
    shadeClose: true,
    area: ['100%', '100%'],
    content: '../page/table/edit.html',
    success: function(layero, index) {
        var body = layer.getChildFrame('body', index);
        body.find('input[name = "username"]').val(data.username)
        body.find('input[value = "' + data.sex + '"]').prop("checked", true);
    }
});