Merge branch 'beta' of https://git.cocorobo.cn/CocoRoboLabs/pbl-teacher-table into beta

src/components/pages/Grid.vue

@@ -1038,7 +1038,7 @@ export default {
         {
           type: "getMindNetwork",
           docid: id,
-          pageid: window.parent.US.pageId,
+          pageid: top.US.pageId,
           userid: uid,
           post: "1",
         },