事件详情图片切换

src/views/event.vue

@@ -490,7 +490,7 @@
         /** ----------------------------------事件弹窗结束-未处理------------------------------------- */
         aniu: true,
         showZt: true,
-        zt: "",
+        zt: null,
         fireReport:false,
         optionsProcessed: [
           {

src/views/forest.vue

@@ -558,7 +558,7 @@
         /** ----------------------------------事件弹窗结束------------------------------------- */
         aniu: true,
         showZt: true,
-        zt: "",
+        zt: null,
         fireReport:false,
         optionsProcessed: [{
           value: 'bj',