处理下拉组件不能清空的问题

修改表格字段

src/views/abnormalAlarm/analysisMonitor/alarmHistory/index.vue

@@ -217,56 +217,20 @@ const columns = [{
 const columns_info = [{
     title: 'NUCLIDE',
     align: 'left',
-    dataIndex: 'nuclide'
+    dataIndex: 'nuclide',
+    width:200
   },{
     title: 'THRESHOLD ',
     align: 'left',
-    dataIndex: 'threshold'
+    dataIndex: 'threshold',
+    width:200
   },{
-    title: 'ARMDARR',
+    title: 'VALUE ',
     align: 'left',
-    dataIndex: 'ARMDARR',
+    dataIndex: 'value',
-    customRender: (val) => {
+    width:200
-      if(!val){
+  },
-        return "--"
+  
-      } else{
-        return val
-      }
-    }
-  },{
-    title: 'ARMDRRR',
-    align: 'left',
-    dataIndex: 'ARMDRRR',
-    customRender: (val) => {
-      if(!val){
-        return "--"
-      } else{
-        return val
-      }
-    }
-  },{
-    title: 'IDCARR',
-    align: 'left',
-    dataIndex: 'IDCARR',
-    customRender: (val) => {
-      if(!val){
-        return "--"
-      } else{
-        return val
-      }
-    }
-  },{
-    title: 'IDCRRR',
-    align: 'left',
-    dataIndex: 'IDCRRR',
-    customRender: (val) => {
-      if(!val){
-        return "--"
-      } else{
-        return val
-      }
-    }
-  }
 ]
 export default {
   components: {

src/views/abnormalAlarm/analysisMonitor/alarmRules/index.vue

@@ -19,6 +19,7 @@
             :maxTagCount="1" 
             :filter-option="filterOption"
             show-arrow 
+            allowClear
             :options="stationOptions" 
             @change="onStationChange"
           >
@@ -33,7 +34,7 @@
             dictCode="alarm_analyse_rule_source"
           />
         </a-col>
-        <a-col flex="265px">
+        <a-col flex="275px">
           <span class="item-label">Nuclide</span>
           <a-select style="width:180px"
             v-model="queryParams.nuclide" 
@@ -42,6 +43,7 @@
             :maxTagCount="1" 
             :filter-option="filterOption"
             show-arrow 
+            allowClear
             :options="nuclideOptions" 
             @change="onNuclideChange"
           >