Issue #31: Done.

src/views/Discover/Map/index.vue

@@ -149,10 +149,12 @@ export default {
      * switch trace id and data
      * @param {string} id
      */
-    async switchTraceId(id) {
-      this.traceId = id;
+    async switchTraceId(e) {
+      if(e.count >= 1000) this.isLoading = true;
+      this.traceId = e.id;
       await this.allMapDataStore.getTraceDetail();
       this.$refs.tracesView.createCy();
+      this.isLoading = false;
     },
     /**
      * 將 element nodes 資料彙整