视频交互 位置调整时初始化

src/views/book/courseware/preview/components/video_interaction/VideoInteractionPreview.vue

@@ -136,10 +136,17 @@ export default {
       if (!val) return;
       this.userAnswer = this.answer.answer_list[0];
     },
+    'data.video_list.length': {
+      handler(val) {
+        if (val) {
+          this.initData();
+        }
+      },
+      deep: true,
+      immediate: true,
+    },
   },
-  created() {
-    this.initData();
-  },
+  created() {},
   mounted() {},
   beforeDestroy() {
     if (this.player) {