Merge pull request #7 from PlayEdu/dev

视频详情课时加载错误修复

src/pages/course/index.tsx

@@ -173,7 +173,8 @@ const CoursePage = () => {
                 {chapters.map((item: any, index: number) => (
                   <div key={item.id} className={styles["chapter-it"]}>
                     <div className={styles["chapter-name"]}>{item.name}</div>
-                    {hours[item.id].map((it: any, int: number) => (
+                    {hours[item.id] &&
+                      hours[item.id].map((it: any, int: number) => (
                         <div key={it.id} className={styles["hours-it"]}>
                           {learnHourRecord[it.id] && (
                             <HourCompenent
@@ -183,7 +184,8 @@ const CoursePage = () => {
                               record={learnHourRecord[it.id]}
                               duration={it.duration}
                               progress={
-                              (learnHourRecord[it.id].finished_duration * 100) /
+                                (learnHourRecord[it.id].finished_duration *
+                                  100) /
                                 learnHourRecord[it.id].total_duration
                               }
                             ></HourCompenent>