樣例代碼：

l.setdata(data);//這里就是iframe的方法setdata

layer.open({
                type: 2,
                title:"打印面單",
                skin: 'layui-layer-molv',
                maxmin: true,
                area: ['850px', '80%'],
                btn: ['打印', '取消'],
                content: 'views/orderinfo/print_html.jsp',
                success: function(layero, index){
                    var body = layer.getChildFrame('body', index);//獲取iframe頁(yè)的DOM
                    var l = window["layui-layer-iframe" + index];//獲取iframe頁(yè)的window
                    l.setdata(data);//這里就是iframe的方法setdata
    
                },
                yes: function(index, layero) {
                    n = layero.find("iframe").contents().find("#print_btn");
                    n.trigger("click")
                },
              });