diff --git a/en/application-dev/reference/apis/js-apis-arraylist.md b/en/application-dev/reference/apis/js-apis-arraylist.md
index 691dea9eaed2f4ec4cfbafc22ffb8b547c48cfbc..7d21caeca4c9c42bdc12467ff1846b4f641ec8c2 100644
--- a/en/application-dev/reference/apis/js-apis-arraylist.md
+++ b/en/application-dev/reference/apis/js-apis-arraylist.md
@@ -5,8 +5,8 @@
 
 ## Modules to Import
 
-```
-import ArrayList from '@ohos.util.ArrayList'
+```ts
+import ArrayList from '@ohos.util.ArrayList';
 ```
 
 ## System Capabilities
@@ -30,7 +30,7 @@ A constructor used to create an **ArrayList** instance.
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 ```
 
@@ -55,7 +55,7 @@ Adds an entry at the end of this container.
 
 **Example**
 
-  ```
+  ```ts
   let arrayList = new ArrayList();
   let result = arrayList.add("a");
   let result1 = arrayList.add(1);
@@ -80,7 +80,7 @@ Inserts an entry at the specified position in this container.
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.insert("A", 0);
 arrayList.insert(0, 1);
@@ -107,7 +107,7 @@ Checks whether this container has the specified entry.
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 let result = arrayList.has("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 arrayList.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
@@ -134,7 +134,7 @@ Obtains the index of the first occurrence of the specified entry in this contain
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
@@ -166,7 +166,7 @@ Obtains the index of the last occurrence of the specified entry in this containe
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
@@ -198,7 +198,7 @@ Removes an entry with the specified position from this container.
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
@@ -228,7 +228,7 @@ Removes the first occurrence of the specified entry from this container.
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
@@ -252,7 +252,7 @@ Removes from this container all of the entries within a range, including the ent
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
@@ -287,7 +287,7 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
@@ -325,14 +325,14 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
 arrayList.add(4);
 arrayList.forEach((value, index) => {
-  console.log(value, index);
+  console.log("value:" + value, index);
 });
 ```
 
@@ -357,14 +357,14 @@ comparator
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 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, b) => a - b);
+arrayList.sort((a, b) => b - a);
 arrayList.sort();
 ```
 
@@ -389,7 +389,7 @@ Obtains entries within a range in this container, including the entry at the sta
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
@@ -408,7 +408,7 @@ Clears this container and sets its length to **0**.
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
@@ -432,7 +432,7 @@ Clones this container and returns a copy. The modification to the copy does not
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
@@ -455,7 +455,7 @@ Obtains the capacity of this container.
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
@@ -478,7 +478,7 @@ Converts this container into an array.
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
@@ -501,7 +501,7 @@ Checks whether this container is empty (contains no entry).
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
@@ -524,7 +524,7 @@ Increases the capacity of this container.
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
@@ -542,7 +542,7 @@ Trims the capacity of this container to its current length.
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
@@ -565,7 +565,7 @@ Obtains an iterator, each item of which is a JavaScript object.
 
 **Example**
 
-```
+```ts
 let arrayList = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
@@ -574,14 +574,14 @@ arrayList.add(4);
 
 // Method 1:
 for (let item of arrayList) { 
-  console.log(item); 
+  console.log("value:" + item); 
 } 
 
 // Method 2:
 let iter = arrayList[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
diff --git a/en/application-dev/reference/apis/js-apis-deque.md b/en/application-dev/reference/apis/js-apis-deque.md
index 128dc378de40cc7cca9cc4b8b3732b833cc678b9..1c8a2911decbf06aa3bd61a83c58273ebc1188a8 100644
--- a/en/application-dev/reference/apis/js-apis-deque.md
+++ b/en/application-dev/reference/apis/js-apis-deque.md
@@ -6,8 +6,8 @@
 
 ## Modules to Import
 
-```
-import Deque from '@ohos.util.Deque'  
+```ts
+import Deque from '@ohos.util.Deque'; 
 ```
 
 ## System Capabilities
@@ -30,7 +30,7 @@ A constructor used to create a **Deque** instance.
 
 **Example**
 
-```
+```ts
 let deque = new Deque();
 ```
 
@@ -48,7 +48,7 @@ Inserts an entry at the front of this container.
 
 **Example**
 
-```
+```ts
 let deque = new Deque();
 deque.insertFront("a");
 deque.insertFront(1);
@@ -72,7 +72,7 @@ Inserts an entry at the end of this container.
 
 **Example**
 
-```
+```ts
 let deque = new Deque();
 deque.insertEnd("a");
 deque.insertEnd(1);
@@ -102,7 +102,7 @@ Checks whether this container has the specified entry.
 
 **Example**
 
-```
+```ts
 let deque = new Deque();
 let result = deque.has("Ahfbrgrbgnutfodgorrogorg");
 deque.insertFront("Ahfbrgrbgnutfodgorrogorg");
@@ -123,7 +123,7 @@ Removes the first entry of this container.
 
 **Example**
 
-```
+```ts
 let deque = new Deque();
 deque.insertFront(2);
 deque.insertFront(4);
@@ -147,7 +147,7 @@ Removes the last entry of this container.
 
 **Example**
 
-```
+```ts
 let deque = new Deque();
 deque.insertFront(2);
 deque.insertEnd(4);
@@ -181,14 +181,14 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let deque = new Deque();
 deque.insertFront(2);
 deque.insertEnd(4);
 deque.insertFront(5);
 deque.insertEnd(4);
 deque.forEach((value, index) => {
-  console.log(value, index);
+  console.log("value:" + value, index);
 });
 ```
 
@@ -206,7 +206,7 @@ Obtains the first entry of this container.
 
 **Example**
 
-```
+```ts
 let deque = new Deque();
 deque.insertEnd(2);
 deque.insertEnd(4);
@@ -229,7 +229,7 @@ Obtains the last entry of this container.
 
 **Example**
 
-```
+```ts
 let deque = new Deque();
 deque.insertFront(2);
 deque.insertFront(4);
@@ -252,7 +252,7 @@ Obtains an iterator, each item of which is a JavaScript object.
 | IterableIterator<T> | Iterator obtained.|
 
 **Example**
-```
+```ts
 let deque = new Deque();
 deque.insertFront(2);
 deque.insertFront(4);
@@ -261,14 +261,14 @@ deque.insertFront(4);
 
 // Method 1:
 for (let item of deque) { 
-  console.log(item); 
+  console.log("value:" + item); 
 }
 
 // Method 2:
 let iter = deque[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
diff --git a/en/application-dev/reference/apis/js-apis-hashmap.md b/en/application-dev/reference/apis/js-apis-hashmap.md
index 612f81c27952b106218a84edb569c09a23203863..ce3266060385b8bb4647542bf4aa80b9763032de 100644
--- a/en/application-dev/reference/apis/js-apis-hashmap.md
+++ b/en/application-dev/reference/apis/js-apis-hashmap.md
@@ -6,8 +6,8 @@
 
 ## Modules to Import
 
-```
-import HashMap from '@ohos.util.HashMap'  
+```ts
+import HashMap from '@ohos.util.HashMap'; 
 ```
 
 ## System Capabilities
@@ -32,7 +32,7 @@ A constructor used to create a **HashMap** instance.
 
 **Example**
 
-```
+```ts
 let hashMap = new HashMap();
 ```
 
@@ -51,7 +51,7 @@ Checks whether this container is empty (contains no entry).
 
 **Example**
 
-```
+```ts
 const hashMap = new HashMap();
 let result = hashMap.isEmpty();
 ```
@@ -77,7 +77,7 @@ Checks whether this container contains the specified key.
 
 **Example**
 
-```
+```ts
 let hashMap = new HashMap();
 let result = hashMap.hasKey("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 hashMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
@@ -105,7 +105,7 @@ Checks whether this container contains the specified value.
 
 **Example**
 
-```
+```ts
 let hashMap = new HashMap();
 let result = hashMap.hasValue(123);
 hashMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
@@ -133,7 +133,7 @@ Obtains the value of the specified key in this container.
 
 **Example**
 
-```
+```ts
 let hashMap = new HashMap();
 hashMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 hashMap.set("sdfs", 356);
@@ -155,7 +155,7 @@ Adds all entries in a **HashMap** instance to this container.
 
 **Example**
 
-```
+```ts
 let hashMap = new HashMap();
 hashMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 hashMap.set("sdfs", 356);
@@ -185,7 +185,7 @@ Adds an entry to this container.
 
 **Example**
 
-```
+```ts
 let hashMap = new HashMap();
 let result = hashMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 ```
@@ -211,7 +211,7 @@ Removes an entry with the specified key from this container.
 
 **Example**
 
-```
+```ts
 let hashMap = new HashMap();
 hashMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 hashMap.set("sdfs", 356);
@@ -227,7 +227,7 @@ Clears this container and sets its length to **0**.
 
 **Example**
 
-```
+```ts
 let hashMap = new HashMap();
 hashMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 hashMap.set("sdfs", 356);
@@ -249,14 +249,14 @@ Obtains an iterator that contains all the entries in this container.
 
 **Example**
 
-```
+```ts
 let hashMap = new HashMap();
 hashMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 hashMap.set("sdfs", 356);
 let iter = hashMap.keys();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
@@ -276,14 +276,14 @@ Obtains an iterator that contains all the values in this container.
 
 **Example**
 
-```
+```ts
 let hashMap = new HashMap();
 hashMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 hashMap.set("sdfs", 356);
 let iter = hashMap.values();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
@@ -310,7 +310,7 @@ Replaces an entry in this container.
 
 **Example**
 
-```
+```ts
 let hashMap = new HashMap();
 hashMap.set("sdfs", 123);
 let result = hashMap.replace("sdfs", 357);
@@ -339,12 +339,12 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let hashMap = new HashMap();
 hashMap.set("sdfs", 123);
 hashMap.set("dfsghsf", 357);
 hashMap.forEach((value, key) => {
-  console.log(value, key);
+  console.log("value:" + value, key);
 });
 ```
 
@@ -363,15 +363,15 @@ Obtains an iterator that contains all the entries in this container.
 
 **Example**
 
-```
+```ts
 let hashMap = new HashMap();
 hashMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 hashMap.set("sdfs", 356);
 let iter = hashMap.entries();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp[0]);
-  console.log(temp[1]);
+  console.log("key:" + temp[0]);
+  console.log("value:" + temp[1]);
   temp = iter.next().value;
 }
 ```
@@ -390,23 +390,23 @@ Obtains an iterator, each item of which is a JavaScript object.
 | IterableIterator<[K, V]> | Iterator obtained.|
 
 **Example**
-```
+```ts
 let hashMap = new HashMap();
 hashMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 hashMap.set("sdfs", 356);
 
 // Method 1:
 for (let item of hashMap) { 
-  console.log("key: " + item[0]);
-  console.log("value: " + item[1]);
+  console.log("key:" + item[0]);
+  console.log("value:" + item[1]);
 }
 
 // Method 2:
 let iter = hashMap[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp[0]);
-  console.log(temp[1]);
+  console.log("key:" + temp[0]);
+  console.log("value:" + temp[1]);
   temp = iter.next().value;
 }
 ```
diff --git a/en/application-dev/reference/apis/js-apis-hashset.md b/en/application-dev/reference/apis/js-apis-hashset.md
index 4e33216b1a17ff78364fddc103de84035f5d3a74..bbcfe7955ca424ded8c5db5f8a90dd7fdf906d41 100644
--- a/en/application-dev/reference/apis/js-apis-hashset.md
+++ b/en/application-dev/reference/apis/js-apis-hashset.md
@@ -6,7 +6,7 @@
 
 ## Modules to Import
 
-```
+```ts
 import HashSet from '@ohos.util.HashSet';
 ```
 
@@ -32,7 +32,7 @@ A constructor used to create a **HashSet** instance.
 
 **Example**
 
-```
+```ts
 let hashSet = new HashSet();
 ```
 
@@ -51,9 +51,9 @@ Checks whether this container is empty (contains no entry).
 
 **Example**
 
-```
+```ts
 const hashSet = new HashSet();
-hashSet.isEmpty();
+let result = hashSet.isEmpty();
 ```
 
 
@@ -77,7 +77,7 @@ Checks whether this container contains the specified entry.
 
 **Example**
 
-```
+```ts
 let hashSet = new HashSet();
 let result = hashSet.has("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 hashSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
@@ -105,7 +105,7 @@ Adds an entry to this container.
 
 **Example**
 
-```
+```ts
 let hashSet = new HashSet();
 let result = hashSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 ```
@@ -131,7 +131,7 @@ Removes an entry from this container.
 
 **Example**
 
-```
+```ts
 let hashSet = new HashSet();
 hashSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 hashSet.add("sdfs");
@@ -147,7 +147,7 @@ Clears this container and sets its length to **0**.
 
 **Example**
 
-```
+```ts
 let hashSet = new HashSet();
 hashSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 hashSet.add("sdfs");
@@ -169,14 +169,14 @@ Obtains an iterator that contains all the values in this container.
 
 **Example**
 
-```
+```ts
 let hashSet = new HashSet();
 hashSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 hashSet.add("sdfs");
 let iter = hashSet.values();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 } 
 ```
@@ -204,12 +204,12 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let hashSet = new HashSet();
 hashSet.add("sdfs");
 hashSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 hashSet.forEach((value, key) => {
-  console.log(value, key);
+  console.log("value:" + value, key);
 });
 ```
 
@@ -227,15 +227,15 @@ Obtains an iterator that contains all the entries in this container.
 
 **Example**
 
-```
+```ts
 let hashSet = new HashSet();
 hashSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 hashSet.add("sdfs");
 let iter = hashSet.entries();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp[0]);
-  console.log(temp[1]);
+  console.log("key:" + temp[0]);
+  console.log("value:" + temp[1]);
   temp = iter.next().value;
 }
 ```
@@ -255,7 +255,7 @@ Obtains an iterator, each item of which is a JavaScript object.
 
 **Example**
 
-```
+```ts
 let hashSet = new HashSet();
 hashSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 hashSet.add("sdfs");
@@ -269,7 +269,7 @@ for (let item of hashSet) {
 let iter = hashSet[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value: " + temp);
   temp = iter.next().value;
 }
 ```
diff --git a/en/application-dev/reference/apis/js-apis-lightweightmap.md b/en/application-dev/reference/apis/js-apis-lightweightmap.md
index 063b77a636b193720237202185201e3bc9e5a19e..e28016b96bd2e3c041bba4e4bfbdb424e82a784e 100644
--- a/en/application-dev/reference/apis/js-apis-lightweightmap.md
+++ b/en/application-dev/reference/apis/js-apis-lightweightmap.md
@@ -6,8 +6,8 @@
 
 ## Modules to Import
 
-```
-import LightWeightMap from '@ohos.util.LightWeightMap'  
+```ts
+import LightWeightMap from '@ohos.util.LightWeightMap';  
 ```
 
 ## System Capabilities
@@ -32,7 +32,7 @@ A constructor used to create a **LightWeightMap** instance.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 ```
 
@@ -51,7 +51,7 @@ Checks whether this container is empty (contains no entry).
 
 **Example**
 
-```
+```ts
 const lightWeightMap = new LightWeightMap();
 let result = lightWeightMap.isEmpty();
 ```
@@ -77,7 +77,7 @@ Checks whether this container contains all entries of the specified **LightWeigh
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 lightWeightMap.set("sdfs", 356);
@@ -107,7 +107,7 @@ Checks whether this container contains the specified key.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 let result = lightWeightMap.hasKey;
 lightWeightMap.hasKey("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
@@ -136,7 +136,7 @@ Checks whether this container contains the specified value.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 let result = lightWeightMap.hasValue(123);
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
@@ -158,7 +158,7 @@ Increases the capacity of this container.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.increaseCapacityTo(10);
 ```
@@ -184,7 +184,7 @@ Obtains the value of the specified key in this container.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 lightWeightMap.set("sdfs", 356);
@@ -212,7 +212,7 @@ Obtains the index of the first occurrence of an entry with the specified key in
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 lightWeightMap.set("sdfs", 356);
@@ -240,7 +240,7 @@ Obtains the index of the first occurrence of an entry with the specified value i
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 lightWeightMap.set("sdfs", 356);
@@ -268,7 +268,7 @@ Obtains the key of an entry at the specified position in this container.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 lightWeightMap.set("sdfs", 356);
@@ -290,7 +290,7 @@ Adds all entries in a **LightWeightMap** instance to this container.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 lightWeightMap.set("sdfs", 356);
@@ -319,7 +319,7 @@ Adds an entry to this container.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 let result = lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 ```
@@ -345,7 +345,7 @@ Removes an entry with the specified key from this container.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 lightWeightMap.set("sdfs", 356);
@@ -373,7 +373,7 @@ Removes an entry at the specified position from this container.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 lightWeightMap.set("sdfs", 356);
@@ -402,7 +402,7 @@ Sets a value for an entry at the specified position in this container.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 lightWeightMap.set("sdfs", 356);
@@ -430,7 +430,7 @@ Obtains the value of an entry at the specified position in this container.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 lightWeightMap.set("sdfs", 356);
@@ -446,7 +446,7 @@ Clears this container and sets its length to **0**.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 lightWeightMap.set("sdfs", 356);
@@ -468,14 +468,14 @@ Obtains an iterator that contains all the keys in this container.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 lightWeightMap.set("sdfs", 356);
 let iter = lightWeightMap.keys();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
@@ -495,14 +495,14 @@ Obtains an iterator that contains all the values in this container.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 lightWeightMap.set("sdfs", 356);
 let iter = lightWeightMap.values();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 } 
 ```
@@ -530,12 +530,12 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("sdfs", 123);
 lightWeightMap.set("dfsghsf", 357);
 lightWeightMap.forEach((value, key) => {
-  console.log(value, key);
+  console.log("value:" + value, key);
 });
 ```
 
@@ -554,15 +554,15 @@ Obtains an iterator that contains all the entries in this container.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 lightWeightMap.set("sdfs", 356);
 let iter = lightWeightMap.entries();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp[0]);
-  console.log(temp[1]);
+  console.log("key:" + temp[0]);
+  console.log("value:" + temp[1]);
   temp = iter.next().value;
 }
 ```
@@ -581,7 +581,7 @@ Concatenates the entries in this container into a string and returns the string.
 
 **Example**
 
-  ```
+  ```ts
   let lightWeightMap = new LightWeightMap();
   lightWeightMap.set("A", 123);
   lightWeightMap.set("sdfs", 356);
@@ -602,23 +602,23 @@ Obtains an iterator, each item of which is a JavaScript object.
 
 **Example**
 
-```
+```ts
 let lightWeightMap = new LightWeightMap();
 lightWeightMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 lightWeightMap.set("sdfs", 356);
 
 // Method 1:
 for (let item of lightWeightMap) { 
-  console.log("key: " + item[0]);
-  console.log("value: " + item[1]);
+  console.log("key:" + item[0]);
+  console.log("value:" + item[1]);
 }
 
 // Method 2:
 let iter = lightWeightMap[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp[0]);
-  console.log(temp[1]);
+  console.log("key:" + temp[0]);
+  console.log("value:" + temp[1]);
   temp = iter.next().value;
 }
 ```
diff --git a/en/application-dev/reference/apis/js-apis-lightweightset.md b/en/application-dev/reference/apis/js-apis-lightweightset.md
index 768ffc337f0cba9fce488dbfd78cbc93173271bf..b21b6e7ca2cc8da0b12802578b0e4f1c7cbcf594 100644
--- a/en/application-dev/reference/apis/js-apis-lightweightset.md
+++ b/en/application-dev/reference/apis/js-apis-lightweightset.md
@@ -6,8 +6,8 @@
 
 ## Modules to Import
 
-```
-import LightWeightSet from '@ohos.util.LightWeightSet'  
+```ts
+import LightWeightSet from '@ohos.util.LightWeightSet';  
 ```
 
 ## System Capabilities
@@ -32,7 +32,7 @@ A constructor used to create a **LightWeightSet** instance.
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 ```
 
@@ -51,7 +51,7 @@ Checks whether this container is empty.
 
 **Example**
 
-```
+```ts
 const lightWeightSet = new LightWeightSet();
 let result = lightWeightSet.isEmpty();
 ```
@@ -76,7 +76,7 @@ Adds an entry to this container.
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 let result = lightWeightSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 ```
@@ -96,7 +96,7 @@ Adds all entries in a **LightWeightSet** instance to this container.
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 lightWeightSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 lightWeightSet.add("sdfs");
@@ -126,7 +126,7 @@ Checks whether this container contains all entries of the specified **LightWeigh
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 lightWeightSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 lightWeightSet.add("sdfs");
@@ -156,7 +156,7 @@ Checks whether this container has the specified key.
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 let result = lightWeightSet.has(123);
 lightWeightSet.add(123);
@@ -184,7 +184,7 @@ Checks whether this container contains objects of the same type as the specified
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 lightWeightSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 lightWeightSet.add("sdfs");
@@ -207,7 +207,7 @@ Increases the capacity of this container.
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 lightWeightSet.increaseCapacityTo(10);
 ```
@@ -233,7 +233,7 @@ Obtains the position index of the entry with the specified key in this container
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 lightWeightSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 lightWeightSet.add("sdfs");
@@ -261,7 +261,7 @@ Removes an entry of the specified key from this container.
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 lightWeightSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 lightWeightSet.add("sdfs");
@@ -289,7 +289,7 @@ Removes the entry at the specified position from this container.
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 lightWeightSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 lightWeightSet.add("sdfs");
@@ -317,7 +317,7 @@ Obtains the value of the entry at the specified position in this container.
 
 **Parameters**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 lightWeightSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 lightWeightSet.add("sdfs");
@@ -333,7 +333,7 @@ Clears this container and sets its length to **0**.
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 lightWeightSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 lightWeightSet.add("sdfs");
@@ -355,7 +355,7 @@ Obtains a string that contains all entries in this container.
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 lightWeightSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 lightWeightSet.add("sdfs");
@@ -377,7 +377,7 @@ Obtains an array that contains all objects in this container.
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 lightWeightSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 lightWeightSet.add("sdfs");
@@ -399,7 +399,7 @@ Obtains an iterator that contains all the values in this container.
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 lightWeightSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 lightWeightSet.add("sdfs");
@@ -434,12 +434,12 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 lightWeightSet.add("sdfs");
 lightWeightSet.add("dfsghsf");
 lightWeightSet.forEach((value, key) => {
-  console.log(value, key);
+  console.log("value:" + value, key);
 });
 ```
 
@@ -458,7 +458,7 @@ Obtains an iterator that contains all the entries in this container.
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 lightWeightSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 lightWeightSet.add("sdfs");
@@ -485,21 +485,21 @@ Obtains an iterator, each item of which is a JavaScript object.
 
 **Example**
 
-```
+```ts
 let lightWeightSet = new LightWeightSet();
 lightWeightSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 lightWeightSet.add("sdfs");
 
 // Method 1:
 for (let item of lightWeightSet) { 
-  console.log("value: " + item);
+  console.log("value:" + item);
 }
 
 // Method 2:
 let iter = lightWeightSet[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
diff --git a/en/application-dev/reference/apis/js-apis-linkedlist.md b/en/application-dev/reference/apis/js-apis-linkedlist.md
index cebc8bbbf05902ef541166d8688964a9fbe0f1a7..d28f9dfcf682f6111bf5956a8aabb87baabf5154 100644
--- a/en/application-dev/reference/apis/js-apis-linkedlist.md
+++ b/en/application-dev/reference/apis/js-apis-linkedlist.md
@@ -6,8 +6,8 @@
 
 ## Modules to Import
 
-```
-import LinkedList from '@ohos.util.LinkedList'  
+```ts
+import LinkedList from '@ohos.util.LinkedList';  
 ```
 
 ## System Capability
@@ -34,7 +34,7 @@ A constructor used to create a **LinkedList** instance.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 ```
 
@@ -59,7 +59,7 @@ Adds an entry at the end of this container.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 let result = linkedList.add("a");
 let result1 = linkedList.add(1);
@@ -83,7 +83,7 @@ Adds an entry at the top of this container.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.addFirst("a");
 linkedList.addFirst(1);
@@ -108,7 +108,7 @@ Inserts an entry at the specified position in this container.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.insert(0, "A");
 linkedList.insert(1, 0);
@@ -135,7 +135,7 @@ Checks whether this container has the specified entry.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 let result1 = linkedList.has("Ahfbrgrbgnutfodgorrogorg");
 linkedList.add("Ahfbrgrbgnutfodgorrogorg");
@@ -162,7 +162,7 @@ Obtains an entry at the specified position in this container.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -194,7 +194,7 @@ Obtains the index of the last occurrence of the specified entry in this containe
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -226,7 +226,7 @@ Obtains the index of the first occurrence of the specified entry in this contain
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -258,7 +258,7 @@ Removes an entry at the specified position from this container.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -282,7 +282,7 @@ Removes the first entry from this container.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -306,7 +306,7 @@ Removes the last entry from this container.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -336,7 +336,7 @@ Removes the first occurrence of the specified entry from this container.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -365,7 +365,7 @@ Removes the first occurrence of the specified entry from this container.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -394,7 +394,7 @@ Removes the last occurrence of the specified entry from this container.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -417,7 +417,7 @@ Clones this container and returns a copy. The modification to the copy does not
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -450,14 +450,14 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
 linkedList.add(5);
 linkedList.add(4);
 linkedList.forEach((value, index) => {
-  console.log(value, index);
+  console.log("value:" + value, index);
 });
 ```
 
@@ -469,7 +469,7 @@ Clears this container and sets its length to **0**.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -499,7 +499,7 @@ Replaces an entry at the specified position in this container with a given entry
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -521,7 +521,7 @@ Converts this container into an array.
 | Array<T> | Array obtained.|
 
 **Example**
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -544,7 +544,7 @@ Obtains the first entry in this container.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -567,7 +567,7 @@ Obtains the last entry in this container.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -591,7 +591,7 @@ Obtains an iterator, each item of which is a JavaScript object.
 
 **Example**
 
-```
+```ts
 let linkedList = new LinkedList();
 linkedList.add(2);
 linkedList.add(4);
@@ -600,14 +600,14 @@ linkedList.add(4);
 
 // Method 1:
 for (let item of linkedList) { 
-  console.log(item); 
+  console.log("value:" + item); 
 } 
 
 // Method 2:
 let iter = linkedList[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
diff --git a/en/application-dev/reference/apis/js-apis-list.md b/en/application-dev/reference/apis/js-apis-list.md
index ad87462656501d54e206b824c51b5555ec8b3e67..3f1ac1be23459be0ff35a11030d5782a76022b19 100644
--- a/en/application-dev/reference/apis/js-apis-list.md
+++ b/en/application-dev/reference/apis/js-apis-list.md
@@ -6,8 +6,8 @@
 
 ## Modules to Import
 
-```
-import List from '@ohos.util.List'  
+```ts
+import List from '@ohos.util.List';  
 ```
 
 ## System Capabilities
@@ -34,7 +34,7 @@ A constructor used to create a **List** instance.
 
 **Example**
 
-```
+```ts
 let list = new List();
 ```
 
@@ -59,7 +59,7 @@ Adds an entry at the end of this container.
 
 **Example**
 
-```
+```ts
 let list = new List();
 let result = list.add("a");
 let result1 = list.add(1);
@@ -84,7 +84,7 @@ Inserts an entry at the specified position in this container.
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.insert("A", 0);
 list.insert(0, 1);
@@ -111,7 +111,7 @@ Checks whether this container has the specified entry.
 
 **Example**
 
-```
+```ts
 let list = new List();
 let result = list.has("Ahfbrgrbgnutfodgorrogorg");
 list.add("Ahfbrgrbgnutfodgorrogorg");
@@ -138,7 +138,7 @@ Obtains the entry at the specified position in this container.
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
@@ -170,7 +170,7 @@ Obtains the index of the last occurrence of the specified entry in this containe
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
@@ -202,7 +202,7 @@ Obtains the index of the first occurrence of the specified entry in this contain
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
@@ -235,7 +235,7 @@ Compares whether a specified object is equal to this container.
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
@@ -270,7 +270,7 @@ Removes an entry at the specified position from this container.
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
@@ -300,7 +300,7 @@ Removes the first occurrence of the specified entry from this container.
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
@@ -333,7 +333,7 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
@@ -371,14 +371,14 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
 list.add(5);
 list.add(4);
 list.forEach((value, index) => {
-  console.log(value, index);
+  console.log("value: " + value, index);
 });
 
 ```
@@ -404,14 +404,14 @@ comparator
 
 **Example**
 
-```
+```ts
 let list = new List();
 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, b) => a - b);
+list.sort((a, b) => b - a);
 ```
 
 ### getSubList
@@ -435,7 +435,7 @@ Obtains entries within a range in this container, including the entry at the sta
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
@@ -454,7 +454,7 @@ Clears this container and sets its length to **0**.
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
@@ -484,7 +484,7 @@ Replaces an entry at the specified position in this container with a given entry
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
@@ -508,7 +508,7 @@ Converts this container into an array.
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
@@ -531,7 +531,7 @@ Checks whether this container is empty (contains no entry).
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
@@ -554,7 +554,7 @@ Obtains the first entry in this container.
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
@@ -577,7 +577,7 @@ Obtains the last entry in this container.
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
@@ -601,7 +601,7 @@ Obtains an iterator, each item of which is a JavaScript object.
 
 **Example**
 
-```
+```ts
 let list = new List();
 list.add(2);
 list.add(4);
@@ -610,14 +610,14 @@ list.add(4);
 
 // Method 1:
 for (let item of list) { 
-  console.log(item); 
+  console.log("value: " + item); 
 }
 
 // Method 2:
 let iter = list[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value: " + temp);
   temp = iter.next().value;
 }
 ```
diff --git a/en/application-dev/reference/apis/js-apis-plainarray.md b/en/application-dev/reference/apis/js-apis-plainarray.md
index ad79f05458fa5426b6cef9f0ab2e459726e030ed..a5d8cb715bd5d47acd5ae4d8865e1cbb2542d3ff 100644
--- a/en/application-dev/reference/apis/js-apis-plainarray.md
+++ b/en/application-dev/reference/apis/js-apis-plainarray.md
@@ -6,8 +6,8 @@
 
 ## Modules to Import
 
-```
-import PlainArray from '@ohos.util.PlainArray'  
+```ts
+import PlainArray from '@ohos.util.PlainArray';  
 ```
 
 ## System Capability
@@ -32,7 +32,7 @@ A constructor used to create a **PlainArray** instance.
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 ```
 
@@ -51,7 +51,7 @@ Checks whether this container is empty.
 
 **Example**
 
-```
+```ts
 const plainArray = new PlainArray();
 let result = plainArray.isEmpty();
 ```
@@ -77,7 +77,7 @@ Checks whether this container contains the specified key.
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 plainArray.has(1);
 plainArray.add(1, "sddfhf");
@@ -105,7 +105,7 @@ Obtains the value of the specified key in this container.
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 plainArray.add(1, "sddfhf");
 plainArray.add(2, "sffdfhf");
@@ -133,7 +133,7 @@ Obtains the index of the first occurrence of an entry with the specified key in
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 plainArray.add(1, "sddfhf");
 plainArray.add(2, "sffdfhf");
@@ -161,7 +161,7 @@ Obtains the index of the first occurrence of an entry with the specified value i
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 plainArray.add(1, "sddfhf");
 plainArray.add(2, "sffdfhf");
@@ -189,7 +189,7 @@ Obtains the key of the entry at the specified position in this container.
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 plainArray.add(1, "sddfhf");
 plainArray.add(2, "sffdfhf");
@@ -216,7 +216,7 @@ Obtains the value of an entry at the specified position in this container.
 
 **Example**
 
-  ```
+  ```ts
   let plainArray = new PlainArray();
   plainArray.add(1, "sddfhf");
   plainArray.add(2, "sffdfhf");
@@ -237,7 +237,7 @@ Clones this container and returns a copy. The modification to the copy does not
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 plainArray.add(1, "sddfhf");
 plainArray.add(2, "sffdfhf");
@@ -260,7 +260,7 @@ Adds an entry to this container.
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 plainArray.add(1, "sddfhf");
 ```
@@ -286,7 +286,7 @@ Removes an entry with the specified key from this container.
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 plainArray.add(1, "sddfhf");
 plainArray.add(2, "sffdfhf");
@@ -315,7 +315,7 @@ Removes an entry at the specified position from this container.
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 plainArray.add(1, "sddfhf");
 plainArray.add(2, "sffdfhf");
@@ -345,7 +345,7 @@ Removes entries in a specified range from this container.
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 plainArray.add(1, "sddfhf");
 plainArray.add(2, "sffdfhf");
@@ -368,7 +368,7 @@ Sets a value for an entry at the specified position in this container.
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 plainArray.add(1, "sddfhf");
 plainArray.add(2, "sffdfhf");
@@ -390,7 +390,7 @@ Obtains a string that contains all entries in this container.
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 plainArray.add(1, "sddfhf");
 plainArray.add(2, "sffdfhf");
@@ -406,7 +406,7 @@ Clears this container and sets its length to **0**.
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 plainArray.add(1, "sddfhf");
 plainArray.add(2, "sffdfhf");
@@ -436,12 +436,12 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 plainArray.add(1, "sddfhf");
 plainArray.add(2, "sffdfhf");
-plainArray.forEach((value, key) => {
-  console.log(value, key);
+plainArray.forEach((value, index) => {
+  console.log("value:" + value, index);
 });
 ```
 
@@ -460,23 +460,23 @@ Obtains an iterator, each item of which is a JavaScript object.
 
 **Example**
 
-```
+```ts
 let plainArray = new PlainArray();
 plainArray.add(1, "sddfhf");
 plainArray.add(2, "sffdfhf");
 
 // Method 1:
 for (let item of plainArray) { 
-  console.log("index: " + item[0]);
-  console.log("value: " + item[1]);
+  console.log("index:" + item[0]);
+  console.log("value:" + item[1]);
 }
 
 // Method 2:
 let iter = plainArray[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp[0]);
-  console.log(temp[1]);
+  console.log("index:" + temp[0]);
+  console.log("value:" + temp[1]);
   temp = iter.next().value;
 }
 ```
diff --git a/en/application-dev/reference/apis/js-apis-queue.md b/en/application-dev/reference/apis/js-apis-queue.md
index b773be32727a995718493a767655b8445f984919..fc7a9688603833a8b77f8a47a7794147e6b5e6a4 100644
--- a/en/application-dev/reference/apis/js-apis-queue.md
+++ b/en/application-dev/reference/apis/js-apis-queue.md
@@ -6,8 +6,8 @@
 
 ## Modules to Import
 
-```
-import Queue from '@ohos.util.Queue'  
+```ts
+import Queue from '@ohos.util.Queue';  
 ```
 
 ## System Capabilities
@@ -33,7 +33,7 @@ A constructor used to create a **Queue** instance.
 
 **Example**
 
-```
+```ts
 let queue = new Queue();
 ```
 
@@ -58,7 +58,7 @@ Adds an entry at the end of this container.
 
 **Example**
 
-```
+```ts
 let queue = new Queue();
 let result = queue.add("a");
 let result1 = queue.add(1);
@@ -83,7 +83,7 @@ Removes the first entry from this container.
 
 **Example**
 
-```
+```ts
 let queue = new Queue();
 queue.add(2);
 queue.add(4);
@@ -107,7 +107,7 @@ Obtains the first entry of this container.
 
 **Example**
 
-```
+```ts
 let queue = new Queue();
 queue.add(2);
 queue.add(4);
@@ -140,14 +140,14 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let queue = new Queue();
 queue.add(2);
 queue.add(4);
 queue.add(5);
 queue.add(4);
 queue.forEach((value, index) => {
-  console.log(value, index);
+  console.log("value:" + value, index);
 });
 
 ```
@@ -166,7 +166,7 @@ Obtains an iterator, each item of which is a JavaScript object.
 | IterableIterator<T> | Iterator obtained.|
 
 **Example**
-```
+```ts
 let queue = new Queue();
 queue.add(2);
 queue.add(4);
@@ -175,14 +175,14 @@ queue.add(4);
 
 // Method 1:
 for (let item of queue) { 
-  console.log(item); 
+  console.log("value:" + item); 
 }
 
 // Method 2:
 let iter = queue[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
diff --git a/en/application-dev/reference/apis/js-apis-stack.md b/en/application-dev/reference/apis/js-apis-stack.md
index 3a8edec81681964ebd5cf171c1d837b2b335e792..8cd94a47054bcc062fe4c3773a3aa9329bbd095f 100644
--- a/en/application-dev/reference/apis/js-apis-stack.md
+++ b/en/application-dev/reference/apis/js-apis-stack.md
@@ -6,8 +6,8 @@
 
 ## Modules to Import
 
-```
-import Stack from '@ohos.util.Stack'  
+```ts
+import Stack from '@ohos.util.Stack';  
 ```
 
 ## System Capabilities
@@ -33,7 +33,7 @@ A constructor used to create a **Stack** instance.
 
 **Example**
 
-```
+```ts
 let stack = new Stack();
 ```
 
@@ -58,7 +58,7 @@ Adds an entry at the top of this container.
 
 **Example**
 
-```
+```ts
 let stack = new Stack();
 let result = stack.push("a");
 let result1 = stack.push(1);
@@ -82,7 +82,7 @@ Removes the top entry from this container.
 
 **Example**
 
-```
+```ts
 let stack = new Stack();
 stack.push(2);
 stack.push(4);
@@ -106,7 +106,7 @@ Obtains the top entry of this container.
 
 **Example**
 
-```
+```ts
 let stack = new Stack();
 stack.push(2);
 stack.push(4);
@@ -135,7 +135,7 @@ Obtains the index of the first occurrence of the specified entry in this contain
 
 **Example**
 
-```
+```ts
 let stack = new Stack();
 stack.push(2);
 stack.push(4);
@@ -168,14 +168,14 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let stack = new Stack();
 stack.push(2);
 stack.push(4);
 stack.push(5);
 stack.push(4);
 stack.forEach((value, index) => {
- console.log(value, index);
+ console.log("value:" + value, index);
 });
 ```
 
@@ -193,7 +193,7 @@ Checks whether this container is empty (contains no entries).
 
 **Example**
 
-```
+```ts
 let stack = new Stack();
 stack.push(2);
 stack.push(4);
@@ -216,7 +216,7 @@ Obtains an iterator, each item of which is a JavaScript object.
 | IterableIterator<T> | Iterator obtained.|
 
 **Example**
-```
+```ts
 let stack = new Stack();
 stack.push(2);
 stack.push(4);
@@ -225,14 +225,14 @@ stack.push(4);
 
 // Method 1:
 for (let item of stack) { 
-  console.log(item); 
+  console.log("value:" + item); 
 }
 
 // Method 2:
 let iter = stack[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
diff --git a/en/application-dev/reference/apis/js-apis-treemap.md b/en/application-dev/reference/apis/js-apis-treemap.md
index 8aa15caf96fdf5886027bfae520473081cedef87..8ea6263f621fa7765813fdbea099445c277dee1c 100644
--- a/en/application-dev/reference/apis/js-apis-treemap.md
+++ b/en/application-dev/reference/apis/js-apis-treemap.md
@@ -6,8 +6,8 @@
 
 ## Modules to Import
 
-```
-import TreeMap from '@ohos.util.TreeMap'  
+```ts
+import TreeMap from '@ohos.util.TreeMap';  
 ```
 
 ## System Capabilities
@@ -38,7 +38,7 @@ A constructor used to create a **TreeMap** instance.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 ```
 
@@ -57,7 +57,7 @@ Checks whether this container is empty (contains no entry).
 
 **Example**
 
-```
+```ts
 const treeMap = new TreeMap();
 let result = treeMap.isEmpty();
 ```
@@ -83,7 +83,7 @@ Checks whether this container has the specified key.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 let result = treeMap.hasKey("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 treeMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
@@ -111,7 +111,7 @@ Checks whether this container has the specified value.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 let result = treeMap.hasValue(123);
 treeMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
@@ -139,7 +139,7 @@ Obtains the value of the specified key in this container.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 treeMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 treeMap.set("sdfs", 356);
@@ -161,7 +161,7 @@ Obtains the first key in this container.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 treeMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 treeMap.set("sdfs", 356);
@@ -183,7 +183,7 @@ Obtains the last key in this container.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 treeMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 treeMap.set("sdfs", 356);
@@ -205,7 +205,7 @@ Adds all entries in a **TreeMap** instance to this container.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 treeMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 treeMap.set("sdfs", 356);
@@ -235,7 +235,7 @@ Adds an entry to this container.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 treeMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 ```
@@ -261,7 +261,7 @@ Removes the entry with the specified key from this container.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 treeMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 treeMap.set("sdfs", 356);
@@ -289,7 +289,7 @@ Obtains the key that is placed in front of the input key in this container.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 treeMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 treeMap.set("sdfs", 356);
@@ -318,7 +318,7 @@ Obtains the key that is placed next to the input key in this container.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 treeMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 treeMap.set("sdfs", 356);
@@ -347,7 +347,7 @@ Replaces an entry in this container.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 treeMap.set("sdfs", 123);
 let result = treeMap.replace("sdfs", 357);
@@ -362,7 +362,7 @@ Clears this container and sets its length to **0**.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 treeMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 treeMap.set("sdfs", 356);
@@ -384,14 +384,14 @@ Obtains an iterator that contains all the keys in this container.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 treeMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 treeMap.set("sdfs", 356);
 let iter = treeMap.keys();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 } 
 ```
@@ -411,14 +411,14 @@ Obtains an iterator that contains all the values in this container.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 treeMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 treeMap.set("sdfs", 356);
 let iter = treeMap.values();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
@@ -446,12 +446,12 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 treeMap.set("sdfs", 123);
 treeMap.set("dfsghsf", 357);
 treeMap.forEach((value, key) => {
-  console.log(value, key);
+  console.log("value:" + value, key);
 });
 ```
 
@@ -470,15 +470,15 @@ Obtains an iterator that contains all the entries in this container.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 treeMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 treeMap.set("sdfs", 356);
 let iter = treeMap.entries();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp[0]);
-  console.log(temp[1]);
+  console.log("key:" + temp[0]);
+  console.log("value:" + temp[1]);
   temp = iter.next().value;
 }
 ```
@@ -498,23 +498,23 @@ Obtains an iterator, each item of which is a JavaScript object.
 
 **Example**
 
-```
+```ts
 let treeMap = new TreeMap();
 treeMap.set("Ahfbrgrbgnutfodgorrogorgrogofdfdf", 123);
 treeMap.set("sdfs", 356);
 
 // Method 1:
 for (let item of treeMap) { 
-  console.log("key: " + item[0]);
-  console.log("value: " + item[1]);
+  console.log("key:" + item[0]);
+  console.log("value:" + item[1]);
 }
 
 // Method 2:
 let iter = treeMap[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp[0]);
-  console.log(temp[1]);
+  console.log("key:" + temp[0]);
+  console.log("value:" + temp[1]);
   temp = iter.next().value;
 }
 ```
diff --git a/en/application-dev/reference/apis/js-apis-treeset.md b/en/application-dev/reference/apis/js-apis-treeset.md
index a37b5515c9aed096bb708c40eb2482acf35311d0..69e6c6e1fc4ca032f1f8bb9bbf8ff6a8b0d51a7b 100644
--- a/en/application-dev/reference/apis/js-apis-treeset.md
+++ b/en/application-dev/reference/apis/js-apis-treeset.md
@@ -6,8 +6,8 @@
 
 ## Modules to Import
 
-```
-import TreeSet from '@ohos.util.TreeSet'  
+```ts
+import TreeSet from '@ohos.util.TreeSet';  
 ```
 
 ## System Capabilities
@@ -38,7 +38,7 @@ A constructor used to create a **TreeSet** instance.
 
 **Example**
 
-```
+```ts
 let treeSet = new TreeSet();
 ```
 
@@ -57,7 +57,7 @@ Checks whether this container is empty (contains no entry).
 
 **Example**
 
-```
+```ts
 const treeSet = new TreeSet();
 let result = treeSet.isEmpty();
 ```
@@ -83,7 +83,7 @@ Checks whether this container has the specified value.
 
 **Example**
 
-```
+```ts
 let treeSet = new TreeSet();
 treeSet.has(123);
 treeSet.add(123);
@@ -105,7 +105,7 @@ Obtains the value of the first entry in this container.
 
 **Example**
 
-```
+```ts
 let treeSet = new TreeSet();
 treeSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 treeSet.add("sdfs");
@@ -127,7 +127,7 @@ Obtains the value of the last entry in this container.
 
 **Example**
 
-```
+```ts
 let treeSet = new TreeSet();
 treeSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 treeSet.add("sdfs");
@@ -155,7 +155,7 @@ Adds an entry to this container.
 
 **Example**
 
-```
+```ts
 let treeSet = new TreeSet();
 let result = treeSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 ```
@@ -181,7 +181,7 @@ Removes the entry with the specified key from this container.
 
 **Example**
 
-```
+```ts
 let treeSet = new TreeSet();
 treeSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 treeSet.add("sdfs");
@@ -209,7 +209,7 @@ Obtains the value that is placed in front of the input key in this container.
 
 **Example**
 
-```
+```ts
 let treeSet = new TreeSet();
 treeSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 treeSet.add("sdfs");
@@ -238,7 +238,7 @@ Obtains the value that is placed next to the input key in this container.
 
 **Example**
 
-```
+```ts
 let treeSet = new TreeSet();
 treeSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 treeSet.add("sdfs");
@@ -261,7 +261,7 @@ Removes the first entry in this container.
 
 **Return value**
 
-```
+```ts
 let treeSet = new TreeSet();
 treeSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 treeSet.add("sdfs");
@@ -283,7 +283,7 @@ Removes the last entry in this container.
 
 **Return value**
 
-```
+```ts
 let treeSet = new TreeSet();
 treeSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 treeSet.add("sdfs");
@@ -299,7 +299,7 @@ Clears this container and sets its length to **0**.
 
 **Example**
 
-```
+```ts
 let treeSet = new TreeSet();
 treeSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 treeSet.add("sdfs");
@@ -321,14 +321,14 @@ Obtains an iterator that contains all the values in this container.
 
 **Example**
 
-```
+```ts
 let treeSet = new TreeSet();
 treeSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 treeSet.add("sdfs");
 let iter = treeSet.values();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 } 
 ```
@@ -356,12 +356,12 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let treeSet = new TreeSet();
 treeSet.add("sdfs");
 treeSet.add("dfsghsf");
 treeSet.forEach((value, key) => {
-  console.log(value, key)
+  console.log("value:" + value, key)
 });
 ```
 
@@ -380,15 +380,15 @@ Obtains an iterator that contains all the entries in this container.
 
 **Example**
 
-```
+```ts
 let treeSet = new TreeSet();
 treeSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 treeSet.add("sdfs");
 let iter = treeSet.entries();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp[0]);
-  console.log(temp[1]);
+  console.log("key:" + temp[0]);
+  console.log("value:" + temp[1]);
   temp = iter.next().value;
 }
 ```
@@ -409,21 +409,21 @@ Obtains an iterator, each item of which is a JavaScript object.
 
 **Example**
 
-```
+```ts
 let treeSet = new TreeSet();
 treeSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 treeSet.add("sdfs");
   
 // Method 1:
 for (let item of treeSet) { 
-  console.log("value: " + item);
+  console.log("value:" + item);
 }
 
 // Method 2:
 let iter = treeSet[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
diff --git a/en/application-dev/reference/apis/js-apis-vector.md b/en/application-dev/reference/apis/js-apis-vector.md
index 149fdc42e3179d86a052ad72b87d4e4c1fd4f4e5..9d4d892161f6f75aca71f314e475e863a74cbdb4 100644
--- a/en/application-dev/reference/apis/js-apis-vector.md
+++ b/en/application-dev/reference/apis/js-apis-vector.md
@@ -6,8 +6,8 @@
 
 ## Modules to Import
 
-```
-import Vector from '@ohos.util.Vector'  
+```ts
+import Vector from '@ohos.util.Vector';  
 ```
 
 ## System Capability
@@ -33,7 +33,7 @@ A constructor used to create a **Vector** instance.
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 ```
 
@@ -58,7 +58,7 @@ Adds an entry at the end of this container.
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 let result = vector.add("a");
 let result1 = vector.add(1);
@@ -83,7 +83,7 @@ Inserts an entry at the specified position in this container.
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.insert("A", 0);
 vector.insert(0, 1);
@@ -110,7 +110,7 @@ Checks whether this container has the specified entry.
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 let result = vector.has("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 vector.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
@@ -137,7 +137,7 @@ Obtains the index of the first occurrence of the specified entry in this contain
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -169,7 +169,7 @@ Obtains the index of the last occurrence of the specified entry in this containe
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -201,7 +201,7 @@ Removes an entry at the specified position from this container.
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -231,7 +231,7 @@ Removes the first occurrence of the specified entry from this container.
 
 **Return value**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -255,7 +255,7 @@ Removes from this container all of the entries within a range, including the ent
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -290,7 +290,7 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -328,14 +328,14 @@ callbackfn
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
 vector.add(4);
 vector.forEach((value, index) => {
-  console.log(value, index)
+  console.log("value:" + value, index)
 });
 
 ```
@@ -361,14 +361,14 @@ comparator
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 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, b) => a - b);
+vector.sort((a, b) => b - a);
 vector.sort();
 ```
 
@@ -393,7 +393,7 @@ Obtains entries within a range in this container, including the entry at the sta
 
 **Return value**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -413,7 +413,7 @@ Clears all entries in this container and sets its length to **0**.
 
 **Return value**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -436,7 +436,7 @@ Clones this container and returns a copy. The modification to the copy does not
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -459,7 +459,7 @@ Obtains the capacity of this container.
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -482,7 +482,7 @@ Converts this container into an array.
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -505,7 +505,7 @@ Checks whether this container is empty (contains no entries).
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -528,7 +528,7 @@ Increases the capacity of this container.
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -546,7 +546,7 @@ Trims the capacity of this container into its current length.
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -569,7 +569,7 @@ Uses commas (,) to concatenate entries in this container into a string.
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -592,7 +592,7 @@ Copies entries in this container into an array to overwrite elements of the same
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -616,7 +616,7 @@ Obtains the first entry in this container.
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -639,7 +639,7 @@ Obtains the last entry in this container.
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -669,7 +669,7 @@ Searches for an entry backward from the specified position index and returns the
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -700,7 +700,7 @@ Searches for an entry forward from the specified position index and returns the
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -724,7 +724,7 @@ Sets a new length for this container.
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -754,7 +754,7 @@ Obtains an entry at the specified position in this container.
 
 **Example**
 
-  ```
+  ```ts
   let vector = new Vector();
   vector.add(2);
   vector.add(4);
@@ -783,7 +783,7 @@ Replaces an entry at the specified position in this container with a given entry
 
 **Example**
 
-  ```
+  ```ts
   let vector = new Vector();
   vector.add(2);
   vector.add(4);
@@ -806,7 +806,7 @@ Obtains an iterator. Each item of the iterator is a JavaScript object.
 
 **Example**
 
-```
+```ts
 let vector = new Vector();
 vector.add(2);
 vector.add(4);
@@ -815,14 +815,14 @@ vector.add(4);
 
 // Method 1:
 for (let item of vector) { 
-  console.log(item); 
+  console.log("value:" + item); 
 } 
 
 // Method 2:
 let iter = vector[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```