Update coursewarePlay.vue

src/views/coursewarePlay/coursewarePlay.vue

@@ -24,7 +24,14 @@
             <ElImage :hide-on-click-modal="true" fit="contain" :src="activeCourseware?.content" class="imgPlay" />
          </div>
          <div class="songPlayBox" v-if="fileType === 'SONG'">
-            <iframe ref="songPlayDom" class="songIframe" @mousemove="handleMousemove" :src="songPlaySrc" frameborder="0"></iframe>
+            <iframe
+               ref="songPlayDom"
+               :key="activeCourseware?.content"
+               class="songIframe"
+               @mousemove="handleMousemove"
+               :src="songPlaySrc"
+               frameborder="0"
+            ></iframe>
             <!-- <span></span> -->
          </div>
       </div>