update

src/modules/course/views/CourseIndex.vue

@@ -23,7 +23,6 @@ function fetchList() {
   getCourseList(params).then(res => {
     courseList = res.data.data.map((item: any, index: number) => {
       item.length = res.data.data?.length
-      item.index = index
       return item
     })
     console.log(courseList, 'courseList')

src/modules/course/views/CourseView.vue

@@ -84,7 +84,7 @@ function handleStudy() {
   courseViewChapterRef.value.study()
 }
 
-let detailFlag = $ref(props.data?.length > 1 && props.data?.index === 0 ? true : false)
+let detailFlag = $ref(props.data?.length === 1 ? true : false)
 const handleDetail = function () {
   router.push({
     path: '/course/view',