diff --git a/zh-cn/application-dev/reference/apis/js-apis-observer.md b/zh-cn/application-dev/reference/apis/js-apis-observer.md
index f3d1b051fc1eab8f70b8af83f950ae70427582ec..8b23da338f7fb972b3d167bd35adc2917999a4a7 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-observer.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-observer.md
@@ -10,7 +10,7 @@
 ## 导入模块
 
 ```
-import observer from '@ohos.telephony.observer'
+import observer from '@ohos.telephony.observer';
 ```
 
 ## observer.on('networkStateChange')
@@ -44,7 +44,7 @@ on\(type: \'networkStateChange\', callback: Callback<NetworkState\>\): void;
 **示例：**
 
 ```js
-observer.on('networkStateChange', data =>{ 
+observer.on('networkStateChange', data => {
     console.log("on networkStateChange, data:" + JSON.stringify(data));
 });
 ```
@@ -82,7 +82,7 @@ on\(type: \'networkStateChange\', options: { slotId: number }, callback: Callbac
 **示例：**
 
 ```js
-observer.on('networkStateChange', {slotId: 0}, data =>{ 
+observer.on('networkStateChange', {slotId: 0}, data => {
     console.log("on networkStateChange, data:" + JSON.stringify(data));
 });
 ```
@@ -156,7 +156,7 @@ on\(type: \'signalInfoChange\', callback: Callback<Array<SignalInformation\>\>):
 **示例：**
 
 ```js
-observer.on('signalInfoChange', data =>{ 
+observer.on('signalInfoChange', data => {
     console.log("on signalInfoChange, data:" + JSON.stringify(data));
 });
 ```
@@ -192,7 +192,7 @@ on\(type: \'signalInfoChange\', options: { slotId: number }, callback: Callback<
 **示例：**
 
 ```js
-observer.on('signalInfoChange', {slotId: 0}, data =>{ 
+observer.on('signalInfoChange', {slotId: 0}, data => {
     console.log("on signalInfoChange, data:" + JSON.stringify(data));
 });
 ```
@@ -268,7 +268,7 @@ on(type: 'callStateChange', callback: Callback\<{ state: CallState, number: stri
 **示例：**
 
 ```js
-observer.on('callStateChange', value =>{ 
+observer.on('callStateChange', value => {
     console.log("on callStateChange, state:" + value.state + ", number:" + value.number);
 });
 ```
@@ -303,7 +303,7 @@ on(type: 'callStateChange', options: { slotId: number }, callback: Callback<{ st
 **示例：**
 
 ```js
-observer.on('callStateChange', {slotId: 0}, value =>{ 
+observer.on('callStateChange', {slotId: 0}, value => {
     console.log("on callStateChange, state:" + value.state + ", number:" + value.number);
 });
 ```
@@ -379,7 +379,7 @@ on\(type: 'cellularDataConnectionStateChange', callback: Callback\<{ state: Data
 **示例：**
 
 ```js
-observer.on('cellularDataConnectionStateChange', value =>{
+observer.on('cellularDataConnectionStateChange', value => {
     console.log("on cellularDataConnectionStateChange, state:" + value.state + ", network:" + value.network);
 });
 ```
@@ -414,7 +414,7 @@ on\(type: 'cellularDataConnectionStateChange', options: { slotId: number }, call
 **示例：**
 
 ```js
-observer.on('cellularDataConnectionStateChange', {slotId: 0}, value =>{
+observer.on('cellularDataConnectionStateChange', {slotId: 0}, value => {
     console.log("on cellularDataConnectionStateChange, state:" + value.state + ", network:" + value.network);
 });
 ```
@@ -490,7 +490,7 @@ on\(type: 'cellularDataFlowChange', callback: Callback\<DataFlowType\>\): void;
 **示例：**
 
 ```js
-observer.on('cellularDataFlowChange', data =>{
+observer.on('cellularDataFlowChange', data => {
     console.log("on networkStateChange, data:" + JSON.stringify(data));
 });
 ```
@@ -525,7 +525,7 @@ on\(type: 'cellularDataFlowChange', options: { slotId: number },  callback: Call
 **示例：**
 
 ```js
-observer.on('cellularDataFlowChange', {slotId: 0}, data =>{
+observer.on('cellularDataFlowChange', {slotId: 0}, data => {
     console.log("on cellularDataFlowChange, data:" + JSON.stringify(data));
 });
 ```
@@ -601,7 +601,7 @@ on\(type: 'simStateChange', callback: Callback\<SimStateData\>\): void;
 **示例：**
 
 ```js
-observer.on('simStateChange', data =>{
+observer.on('simStateChange', data => {
     console.log("on simStateChange, data:" + JSON.stringify(data));
 });
 ```
@@ -636,7 +636,7 @@ on\(type: 'simStateChange', options: { slotId: number }, callback: Callback\<Sim
 **示例：**
 
 ```js
-observer.on('simStateChange', {slotId: 0}, data =>{
+observer.on('simStateChange', {slotId: 0}, data => {
     console.log("on simStateChange, data:" + JSON.stringify(data));
 });
 ```
diff --git a/zh-cn/application-dev/reference/apis/js-apis-radio.md b/zh-cn/application-dev/reference/apis/js-apis-radio.md
index e4b9820b11024bba97664856f3fa020da0af66a2..a31c166e73ae7578b9b5cc485baa8dc3b37fb738 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-radio.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-radio.md
@@ -10,7 +10,7 @@
 ## 导入模块
 
 ```
-import radio from '@ohos.telephony.radio'
+import radio from '@ohos.telephony.radio';
 ```
 
 ## radio.getRadioTech
@@ -45,7 +45,7 @@ getRadioTech\(slotId: number, callback: AsyncCallback<\{psRadioTech: RadioTechno
 
 ```js
 let slotId = 0;
-radio.getRadioTech(slotId, (err, data) =>{ 
+radio.getRadioTech(slotId, (err, data) => {
     console.log(`callback: err->${JSON.stringify(err)}, data->${JSON.stringify(data)}`);
 });
 ```
@@ -127,7 +127,7 @@ getNetworkState\(callback: AsyncCallback<NetworkState\>\): void
 **示例：**
 
 ```js
-radio.getNetworkState((err, data) =>{
+radio.getNetworkState((err, data) => {
     console.log(`callback: err->${JSON.stringify(err)}, data->${JSON.stringify(data)}`);
 });
 ```