diff --git a/docs/examples/node/websocketexample/sql_example.js b/docs/examples/node/websocketexample/sql_example.js
index c120b84d99..7e78bb6c64 100644
--- a/docs/examples/node/websocketexample/sql_example.js
+++ b/docs/examples/node/websocketexample/sql_example.js
@@ -26,7 +26,6 @@ async function createDbAndTable() {
         let conf = new taos.WSConfig(dsn);
         conf.setUser('root');
         conf.setPwd('taosdata');
-        conf.setDb('power');
         wsSql = await taos.sqlConnect(conf);
         console.log("Connected to " + dsn + " successfully.");
         // create database
diff --git a/docs/examples/node/websocketexample/tmq_example.js b/docs/examples/node/websocketexample/tmq_example.js
index 4f7f099c31..4ea3db55c3 100644
--- a/docs/examples/node/websocketexample/tmq_example.js
+++ b/docs/examples/node/websocketexample/tmq_example.js
@@ -40,7 +40,6 @@ async function prepare() {
     let conf = new taos.WSConfig('ws://localhost:6041');
     conf.setUser('root');
     conf.setPwd('taosdata');
-    conf.setDb('power');
     const createDB = `CREATE DATABASE IF NOT EXISTS ${db}`;
     const createStable = `CREATE STABLE IF NOT EXISTS ${db}.${stable} (ts timestamp, current float, voltage int, phase float) TAGS (location binary(64), groupId int);`;
 
diff --git a/docs/examples/node/websocketexample/tmq_seek_example.js b/docs/examples/node/websocketexample/tmq_seek_example.js
index be4d8ddfa4..67286f34b1 100644
--- a/docs/examples/node/websocketexample/tmq_seek_example.js
+++ b/docs/examples/node/websocketexample/tmq_seek_example.js
@@ -34,10 +34,10 @@ async function createConsumer() {
 }
 
 async function prepare() {
-    let conf = new taos.WSConfig('ws://192.168.1.98:6041');
+    let conf = new taos.WSConfig('ws://localhost:6041');
     conf.setUser('root');
     conf.setPwd('taosdata');
-    conf.setDb('power');
+
     const createDB = `CREATE DATABASE IF NOT EXISTS ${db}`;
     const createStable = `CREATE STABLE IF NOT EXISTS ${db}.${stable} (ts timestamp, current float, voltage int, phase float) TAGS (location binary(64), groupId int);`;