fix 书籍列表播放时，记录播放锚点

@@ -86,7 +86,13 @@ export default {
         ]
       })
       this.mp = mp;
-      this.detail = _.cloneDeep(this.item)
+      this.detail = _.cloneDeep(this.item);
+      var video = mp.video();
+      // 监听原生video事件
+      var _this = this;
+      video && video.addEventListener('play', function (event) {
+        _this.handleAction('play', _this.item.id)
+      });
     }, 500);
   },
   methods: {