update views/maintain/index.vue

Strides-Admin/src/views/maintain/index.vue

@@ -5,7 +5,8 @@
         class="filter-view-item"
         placeholder="Maintenance Type"
         v-model="params.pageCriteria.maintenanceType"
-        @change="toSearch">
+        @change="toSearch"
+        clearable>
         <el-option
           v-for="(item, index) in options.type"
           :key="index"