修改

src/views/assetManagement/assetList.vue

@@ -27,11 +27,14 @@
               :default-expanded-keys="[1, 3]"
               :default-checked-keys="[5]"
               :props="defaultProps"
+              :expand-on-click-node="false"
             >
               <template slot-scope="{ node, data }">
-                <span>
+                <span style="width: 100%" @mouseenter="mouseenter(data)" @mouseleave="mouseleave(data)">
                   <img :src="data.icon" class="treeIcon">
                   <label>{{ node.label }}</label>
+                  <img v-show="data.show" :src="deleteIcon" class="treeIcon2" @click="deleteRow">
+                  <img v-show="data.show" :src="updateIcon" class="treeIcon2" @click="leftAdd">
                 </span>
               </template>
             </el-tree>
@@ -174,6 +177,8 @@ export default {
         { name: 'ORACLE(备)', code: 'test1-0406104437-0112', flag: '在用' },
         { name: 'ORACLE(主)', code: 'test1-0406104534-0114', flag: '在用' }
       ],
+      deleteIcon: require('@/assets/image/delete.png'),
+      updateIcon: require('@/assets/image/edit.png'),
       data: [{
         id: 1,
         icon: require('@/assets/image/shebei9-guzhang.png'),
@@ -227,6 +232,13 @@ export default {
     this.handleExpand() // 全屏
   },
   methods: {
+    mouseenter(data) {
+      this.$set(data, 'show', true)
+    },
+    mouseleave(data) {
+      this.$set(data, 'show', false)
+    },
+
     handleShowAdd() {
       this.$router.push({
         path: '/assetManagement/addAsset'
@@ -335,6 +347,12 @@ export default {
         width: 17px;
         height: 17px;
       }
+      .treeIcon2{
+        margin-left: 10px;
+        float: right;
+        width: 17px;
+        height: 17px;
+      }
     }
     }
 }