diff --git a/src/views/standard/device/index.vue b/src/views/standard/device/index.vue
index 8bbf6cb..937a0cf 100644
--- a/src/views/standard/device/index.vue
+++ b/src/views/standard/device/index.vue
@@ -5,17 +5,18 @@
         <span>设备管理</span>
       </template>
       <template slot="btns">
-        <el-tooltip effect="dark" content="导出报表" placement="bottom">
-          <el-button
-            v-if="tableData.length"
-            type="primary"
-            size="mini"
-            plain
-            circle
-            icon="fa fa-cloud-download"
-            @click="downExl"
-          ></el-button>
-        </el-tooltip>
+        <template v-if="tableData.length">
+          <el-tooltip effect="dark" content="设备导出" placement="bottom">
+            <el-button
+              type="primary"
+              icon="fa fa-cloud-download"
+              size="mini"
+              plain
+              circle
+              @click="downExl"
+            ></el-button>
+          </el-tooltip>
+        </template>
         <template v-if="role == 'ROLE_XUEXIAO' && type == 1">
           <el-tooltip effect="dark" content="设备导入" placement="bottom">
             <el-button
@@ -261,7 +262,7 @@
                   v-model="query.sn"
                   class="input-with-select"
                   clearable
-                  @input.native="query.studentName=''"
+                  @input.native="query.studentName = ''"
                   @keyup.enter.native="_QueryData(true)"
                 >
                   <el-button
@@ -275,7 +276,7 @@
                   v-model="query.studentName"
                   class="input-with-select"
                   clearable
-                  @input.native="query.sn=''"
+                  @input.native="query.sn = ''"
                   @keyup.enter.native="_QueryData(true)"
                 >
                   <el-button