https://help.fanruan.com/finereport/doc-view-3127.html?source=4

或者

//按钮打开iframe对话框：

var $iframe = $("<iframe id='inp' name='inp' width='100%' height='100%' scrolling='no' frameborder='0'>"); // iframe参数的命名及宽高等

$iframe.attr("src", "${servletURL}?reportlet=目录/报表名.cpt&op=write"); //点击查询时，对话框中显示的子报表

var o = {

title : "标题",

width : 1000,

height: 500

};

FR.showDialog(o.title, o.width, o.height, $iframe,0); //首先弹出对话框