学校-疑似托管设备优化

src/views/schoolSection/deviceManage/outControlDevice.vue

         <Select
           v-model="searchForm.doEvent"
           style="margin-right: 10px; width: 120px"
-          placeholder="事件"
-          @on-change="searchList()"
+          placeholder="选择事件"
+          @on-change="doEventChange()"
         >
           <!-- 1Token变化 2一周未通信 3安装可疑应用 -->
           <Option :value="1">Token变化</Option>
     }
   },
   methods: {
+    doEventChange() {
+      if (this.searchForm.doEvent === 1) {
+        this.columns[this.columns.length - 1].title = "Token更新时间";
+      } else if (this.searchForm.doEvent === 2) {
+        this.columns[this.columns.length - 1].title = "最后在线时间";
+      } else if (this.searchForm.doEvent === 3) {
+        this.columns[this.columns.length - 1].title = "上报时间";
+      }
+      this.searchList();
+    },
     // 搜索
     searchList() {
       this.searchForm.page = 1;