开课编辑把时间变成空

src/components/drawers/AddOpenCourse.vue

@@ -619,8 +619,9 @@ function planEdit(record) {
   formData.value.testId && request(EXAM_DETAIL(formData.value.testId), {}).then(res => formData.value.examInfo = res.data);
   dateTime.value = [formData.value.beginTime, formData.value.endTime];
   offCourseNewVisiable.value = true;
+  //把时间变为空
+  formData.value.duration =''
 }
-
 function openDrawer(row) {
   openCourseVisible.value = true;
   params.value.offcourseId = row.courseId;