update

src/components/pages/scourse.vue

@@ -296,7 +296,7 @@ export default {
       window.parent.postMessage({ cid: cid, screenType: "2" }, "*");
     },
     get(cid){
-      window.parent.postMessage({ cid: cid, screenType: "3" }, "*");
+      window.parent.postMessage({ cid: cid, screenType: "3s" }, "*");
     },
     handle_remove(file, fileList) {
       var _tmp = this.fileList;

src/components/pages/student/course.vue

@@ -296,7 +296,7 @@ export default {
       window.parent.postMessage({ cid: cid, screenType: "2" }, "*");
     },
     get(cid){
-      window.parent.postMessage({ cid: cid, screenType: "3" }, "*");
+      window.parent.postMessage({ cid: cid, screenType: "3s" }, "*");
     },
     handle_remove(file, fileList) {
       var _tmp = this.fileList;