修改

src/components/drawers/AddOpenCourse.vue

@@ -172,8 +172,9 @@
                             height: 32px;
                             border-radius: 8px;
                             overflow: hidden;"
-                            v-model:value="formData.duration"
+
                     ></a-input-number>
+                    <!--  v-model:value="formData.duration" -->
                     <div class="inp_num" style="right: 96px;line-height: 12px">
                         <span style="color: #c7cbd2">分钟</span>
                     </div>
@@ -527,7 +528,7 @@ const durationText = computed(() => dateTime.value?.length?dayjs(dateTime.value[
 function timeChange(time, timeStr) {
   formData.value.beginTime = timeStr[0];
   formData.value.endTime = timeStr[1];
-  formData.value.duration =''
+  formData.value.duration = durationText.value
   // formData.value.duration || (formData.value.duration = dayjs(timeStr[1]).diff(dayjs(timeStr[0]),'minute'))
 }
 
@@ -584,7 +585,6 @@ const del = (id) => {
 };
 
 async function coursePlanConfirm() {
-  formData.value.duration = durationText.value
   await validate().catch(({ errorFields }) => {
     message.warning(errorFields[0].errors.join());
     throw Error("数据校验不通过");
@@ -619,8 +619,6 @@ 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;