diff --git a/en/application-dev/reference/apis/js-apis-arraylist.md b/en/application-dev/reference/apis/js-apis-arraylist.md
index a887e9a02b24275e2574ea5fac7ecee0ac49f723..341295a167878f6c3696efe01f15a29415f91cd8 100644
--- a/en/application-dev/reference/apis/js-apis-arraylist.md
+++ b/en/application-dev/reference/apis/js-apis-arraylist.md
@@ -320,10 +320,10 @@ arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
 arrayList.add(4);
-arrayList.replaceAllElements((value, index) => {
+arrayList.replaceAllElements((value: number, index: number)=> {
   return value = 2 * value;
 });
-arrayList.replaceAllElements((value, index) => {
+arrayList.replaceAllElements((value: number, index: number) => {
   return value = value - 2;
 });
 ```
@@ -394,8 +394,8 @@ arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
 arrayList.add(4);
-arrayList.sort((a, b) => a - b);
-arrayList.sort((a, b) => b - a);
+arrayList.sort((a: number, b: number) => a - b);
+arrayList.sort((a: number, b: number) => b - a);
 arrayList.sort();
 ```
 
diff --git a/en/application-dev/reference/apis/js-apis-list.md b/en/application-dev/reference/apis/js-apis-list.md
index dfd940b660fe213cf114a7a2b3391c75eb608c5e..0b839a5a0baae3fa58e4592485c3b9e959183530 100644
--- a/en/application-dev/reference/apis/js-apis-list.md
+++ b/en/application-dev/reference/apis/js-apis-list.md
@@ -364,10 +364,10 @@ list.add(2);
 list.add(4);
 list.add(5);
 list.add(4);
-list.replaceAllElements((value, index) => {
+list.replaceAllElements((value: number, index: number) => {
   return value = 2 * value;
 });
-list.replaceAllElements((value, index) => {
+list.replaceAllElements((value: number, index: number) => {
   return value = value - 2;
 });
 ```
@@ -439,8 +439,8 @@ list.add(2);
 list.add(4);
 list.add(5);
 list.add(4);
-list.sort((a, b) => a - b);
-list.sort((a, b) => b - a);
+list.sort((a: number, b: number) => a - b);
+list.sort((a: number, b: number) => b - a);
 ```
 
 ### getSubList
@@ -472,9 +472,9 @@ list.add(2);
 list.add(4);
 list.add(5);
 list.add(4);
-let result = list.subList(2, 4);
-let result1 = list.subList(4, 3);
-let result2 = list.subList(2, 6);
+let result = list.getSubList(2, 4);
+let result1 = list.getSubList(4, 3);
+let result2 = list.getSubList(2, 6);
 ```
 
 ### clear
diff --git a/en/application-dev/reference/apis/js-apis-vector.md b/en/application-dev/reference/apis/js-apis-vector.md
index 9288f871d45e7a08a542221ddf561e6a4e4fe81b..5dd8e49bb0c2467b2885784b9c1281f61e46a003 100644
--- a/en/application-dev/reference/apis/js-apis-vector.md
+++ b/en/application-dev/reference/apis/js-apis-vector.md
@@ -319,10 +319,10 @@ vector.add(2);
 vector.add(4);
 vector.add(5);
 vector.add(4);
-vector.replaceAllElements((value, index) => {
+vector.replaceAllElements((value: number, index: number) => {
   return value = 2 * value;
 });
-vector.replaceAllElements((value, index) => {
+vector.replaceAllElements((value: number, index: number) => {
   return value = value - 2;
 });
 ```
@@ -394,8 +394,8 @@ vector.add(2);
 vector.add(4);
 vector.add(5);
 vector.add(4);
-vector.sort((a, b) => a - b);
-vector.sort((a, b) => b - a);
+vector.sort((a: number, b: number) => a - b);
+vector.sort((a: number, b: number) => b - a);
 vector.sort();
 ```
 
@@ -620,7 +620,7 @@ vector.add(2);
 vector.add(4);
 vector.add(5);
 vector.add(4);
-let result = vector.toSting();
+let result = vector.toString();
 ```
 
 ### copyToArray