同步通识课禁用按钮

src/views/AIPage/AIDevelop.vue

@@ -148,12 +148,12 @@
         <!-- 视频切换按钮 - 始终显示 -->
         <div class="video-switch">
           <div class="caret-left" @click="playPreviousVideo">
-            <el-button type="warning" round>
+            <el-button type="warning" round :disabled="flattenMenuItems().indexOf(course.key) === 0">
               <img :src="leftImg" alt="Left" />上一节</el-button
             >
           </div>
           <div class="caret-right" @click="playNextVideo">
-            <el-button type="warning" round
+            <el-button type="warning" round :disabled="flattenMenuItems().indexOf(course.key) === flattenMenuItems().length - 1"
               >下一节<img :src="rightImg" alt="Right" />
             </el-button>
           </div>