diff --git a/client/src/components/Editor/AsideDataSource.vue b/client/src/components/Editor/AsideDataSource.vue
index 40706ae2..dfea7b54 100644
--- a/client/src/components/Editor/AsideDataSource.vue
+++ b/client/src/components/Editor/AsideDataSource.vue
@@ -57,7 +57,7 @@
 
           <el-popover v-if="data.tip"
             placement="right-start"
-            trigger="hover"
+            trigger="click"
             transition="el-fade-in"
             popper-class="aside-tip"
             :close-delay="500">
diff --git a/client/src/components/Editor/AsideEnvVariable.vue b/client/src/components/Editor/AsideEnvVariable.vue
index f979d86b..248033aa 100644
--- a/client/src/components/Editor/AsideEnvVariable.vue
+++ b/client/src/components/Editor/AsideEnvVariable.vue
@@ -43,7 +43,7 @@
 
             <el-popover v-if="data.tip"
               placement="right-start"
-              trigger="hover"
+              trigger="click"
               transition="el-fade-in"
               popper-class="aside-tip"
               :close-delay="500">
diff --git a/client/src/components/Editor/AsideScript.vue b/client/src/components/Editor/AsideScript.vue
index 9fbc9b55..a030e9c7 100644
--- a/client/src/components/Editor/AsideScript.vue
+++ b/client/src/components/Editor/AsideScript.vue
@@ -362,11 +362,15 @@ export default {
       this.defaultExpandedNodeKeys = Object.keys(this.expandedNodeMap);
 
       setImmediate(() => {
+        if (!this.$refs.tree) return;
+
         // 自动选中
         this.$refs.tree.setCurrentKey(this.$store.state.asideScript_currentNodeKey || null);
       });
 
       setTimeout(() => {
+        if (!this.$refs.tree) return;
+
         // 滚动到目标位置
         let entryId = this.$refs.tree.getCurrentKey();
         if (entryId) {
diff --git a/client/src/const.js b/client/src/const.js
index c3988cfc..c12d97b6 100644
--- a/client/src/const.js
+++ b/client/src/const.js
@@ -90,7 +90,7 @@ export const DATE_SOURCE = [
     logo          : logo_redis,
     tagType       : 'danger',
     debugSupported: true,
-    sampleCode    : `helper = DFF.SRC('{0}')\ndb_res = helper.query('GET', '"some_key"')`,
+    sampleCode    : `helper = DFF.SRC('{0}')\ndb_res = helper.query('GET', 'some_key')`,
     configFields: {
       host    : { default: null, isRequired: true },
       port    : { default: 6379 },
@@ -105,7 +105,7 @@ export const DATE_SOURCE = [
     logo          : logo_memcached,
     tagType       : 'success',
     debugSupported: true,
-    sampleCode    : `helper = DFF.SRC('{0}')\ndb_res = helper.query('GET', '"some_key"')`,
+    sampleCode    : `helper = DFF.SRC('{0}')\ndb_res = helper.query('GET', 'some_key')`,
     configFields: {
       servers: { default: null, isRequired: true },
     },