diff --git a/zh-cn/application-dev/reference/apis/js-apis-arraylist.md b/zh-cn/application-dev/reference/apis/js-apis-arraylist.md
index 4279c05500089d0c813979e311657a7c7e041fd0..47fe1ca88cdadc08ade5db3f1bfd89dcad9bbd68 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-arraylist.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-arraylist.md
@@ -52,7 +52,7 @@ ArrayList的构造函数。
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<string | number> = new ArrayList();
 ```
 
 
@@ -87,14 +87,19 @@ add(element: T): boolean
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
-let result = arrayList.add("a");
-let result1 = arrayList.add(1);
+class C1 {
+  name: string = ""
+  age: string = ""
+}
+let arrayList: ArrayList<string | number | boolean | Array<number> | C1> = new ArrayList();
+let result1 = arrayList.add("a");
+let arrayList1: ArrayList<number> = new ArrayList();
+let result2 = arrayList.add(1);
 let b = [1, 2, 3];
-let result2 = arrayList.add(b);
-let c = {name: "Dylon", age: "13"};
-let result3 = arrayList.add(c);
-let result4 = arrayList.add(false);
+let result3 = arrayList.add(b);
+let c : C1 = {name: "Dylon", age: "13"}
+let result4 = arrayList.add(c);
+let result5 = arrayList.add(false);
 ```
 
 ### insert
@@ -124,7 +129,7 @@ insert(element: T, index: number): void
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number | string | boolean> = new ArrayList();
 arrayList.insert("A", 0);
 arrayList.insert(0, 1);
 arrayList.insert(true, 2);
@@ -161,9 +166,9 @@ has(element: T): boolean
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<string> = new ArrayList();
 arrayList.add("squirrel");
-let result = arrayList.has("squirrel");
+let result: boolean = arrayList.has("squirrel");
 ```
 
 ### getIndexOf
@@ -197,7 +202,7 @@ getIndexOf(element: T): number
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
@@ -205,7 +210,7 @@ arrayList.add(2);
 arrayList.add(1);
 arrayList.add(2);
 arrayList.add(4);
-let result = arrayList.getIndexOf(2);
+let result: number = arrayList.getIndexOf(2);
 ```
 
 ### getLastIndexOf
@@ -239,7 +244,7 @@ getLastIndexOf(element: T): number
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
@@ -247,7 +252,7 @@ arrayList.add(2);
 arrayList.add(1);
 arrayList.add(2);
 arrayList.add(4);
-let result = arrayList.getLastIndexOf(2);
+let result: number = arrayList.getLastIndexOf(2);
 ```
 
 ### removeByIndex
@@ -282,13 +287,13 @@ removeByIndex(index: number): T
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
 arrayList.add(2);
 arrayList.add(4);
-let result = arrayList.removeByIndex(2);
+let result: number = arrayList.removeByIndex(2);
 ```
 
 ### remove
@@ -322,12 +327,12 @@ remove(element: T): boolean
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
 arrayList.add(4);
-let result = arrayList.remove(2);
+let result: boolean = arrayList.remove(2);
 ```
 
 ### removeByRange
@@ -357,7 +362,7 @@ removeByRange(fromIndex: number, toIndex: number): void
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
@@ -400,14 +405,14 @@ callbackfn的参数说明：
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
 arrayList.add(4);
-arrayList.replaceAllElements((value) => {
-    // 用户操作逻辑根据实际场景进行添加。
-    return value;
+arrayList.replaceAllElements((value: number): number => {
+  // 用户操作逻辑根据实际场景进行添加。
+  return value;
 });
 ```
 
@@ -446,13 +451,13 @@ callbackfn的参数说明：
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
 arrayList.add(4);
-arrayList.forEach((value, index) => {
-    console.log("value:" + value, "index:" + index);
+arrayList.forEach((value: number, index: number) => {
+  console.log("hyq value:" + value, "index:" + index);
 });
 ```
 
@@ -488,7 +493,7 @@ comparator的参数说明：
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
@@ -531,12 +536,12 @@ subArrayList(fromIndex: number, toIndex: number): ArrayList&lt;T&gt;
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
 arrayList.add(4);
-let result = arrayList.subArrayList(2, 4);
+let result: ArrayList<number> = arrayList.subArrayList(2, 4);
 ```
 
 ### clear
@@ -558,7 +563,7 @@ clear(): void
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
@@ -592,12 +597,12 @@ clone(): ArrayList&lt;T&gt;
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
 arrayList.add(4);
-let result = arrayList.clone();
+let result:  ArrayList<number> = arrayList.clone();
 ```
 
 ### getCapacity
@@ -625,12 +630,12 @@ getCapacity(): number
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
 arrayList.add(4);
-let result = arrayList.getCapacity();
+let result: number = arrayList.getCapacity();
 ```
 
 ### convertToArray
@@ -658,12 +663,12 @@ convertToArray(): Array&lt;T&gt;
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
 arrayList.add(4);
-let result = arrayList.convertToArray();
+let result: Array<number> = arrayList.convertToArray();
 ```
 
 ### isEmpty
@@ -691,12 +696,12 @@ isEmpty(): boolean
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
 arrayList.add(4);
-let result = arrayList.isEmpty();
+let result: boolean = arrayList.isEmpty();
 ```
 
 ### increaseCapacityTo
@@ -724,7 +729,7 @@ increaseCapacityTo(newCapacity: number): void
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
@@ -752,7 +757,7 @@ trimToCurrentLength(): void
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
@@ -785,22 +790,23 @@ arrayList.trimToCurrentLength();
 **示例：**
 
 ```ts
-let arrayList = new ArrayList();
+let arrayList: ArrayList<number> = new ArrayList();
 arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
 arrayList.add(4);
 
 // 使用方法一：
-for (let item of arrayList) { 
-    console.log(`value:${item}`); 
-} 
+let numbers: Array<number> = arrayList.convertToArray()
+for (let item of numbers) {
+  console.log(`hyq value : ${item}`);
+}
 
 // 使用方法二：
 let iter = arrayList[Symbol.iterator]();
-let temp = iter.next().value;
-while(temp != undefined) {
-    console.log(`value:${temp}`);
-    temp = iter.next().value;
+let temp = iter.next();
+while(!temp.done) {
+    console.log(`value:${temp.value}`);
+    temp = iter.next();
 }
 ```
\ No newline at end of file
diff --git a/zh-cn/application-dev/reference/apis/js-apis-buffer.md b/zh-cn/application-dev/reference/apis/js-apis-buffer.md
index f787001b479fd4f31424f98c09faa1f2a49c381b..21f9ec032803a1ccfa2d18123d7f9213fd2eb9f0 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-buffer.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-buffer.md
@@ -604,7 +604,7 @@ let buf1 = buffer.allocUninitializedFromPool(26);
 let buf2 = buffer.allocUninitializedFromPool(26).fill('!');
 
 for (let i = 0; i < 26; i++) {
-  buf1[i] = i + 97;
+  buf1.writeInt8(i + 97, i);
 }
 
 buf1.copy(buf2, 8, 16, 20);
@@ -633,8 +633,11 @@ entries(): IterableIterator&lt;[number,&nbsp;number]&gt;
 import buffer from '@ohos.buffer';
 
 let buf = buffer.from('buffer');
-for (let pair of buf.entries()) {
-  console.log(pair.toString());
+let pair = buf.entries()
+let next = pair.next()
+while (!next.done) {
+  console.info(next.value)
+  next = pair.next()
 }
 ```
 
@@ -796,7 +799,8 @@ keys(): IterableIterator&lt;number&gt;
 import buffer from '@ohos.buffer';
 
 let buf = buffer.from('buffer');
-for (const key of buf.keys()) {
+let numbers = Array.from(buf.values())
+for (const key of numbers) {
   console.log(key.toString());
 }
 ```
@@ -1766,7 +1770,7 @@ import buffer from '@ohos.buffer';
 let buf1 = buffer.allocUninitializedFromPool(26);
 
 for (let i = 0; i < 26; i++) {
-  buf1[i] = i + 97;
+  buf1.writeInt8(i + 97, i);
 }
 const buf2 = buf1.subarray(0, 3);
 console.log(buf2.toString('ascii', 0, buf2.length));
@@ -1932,7 +1936,7 @@ import buffer from '@ohos.buffer';
 
 let buf1 = buffer.allocUninitializedFromPool(26);
 for (let i = 0; i < 26; i++) {
-  buf1[i] = i + 97;
+  buf1.writeInt8(i + 97, i);
 }
 console.log(buf1.toString('utf-8'));
 // 打印: abcdefghijklmnopqrstuvwxyz
@@ -1958,8 +1962,11 @@ values(): IterableIterator&lt;number&gt;
 import buffer from '@ohos.buffer';
 
 let buf1 = buffer.from('buffer');
-for (let value of buf1.values()) {
-  console.log(value.toString());
+let pair = buf1.values()
+let next = pair.next()
+while (!next.done) {
+  console.log(next.value.toString());
+  next = pair.next()
 }
 ```
 
@@ -2913,8 +2920,14 @@ Blob的构造函数。
 ```ts
 import buffer from '@ohos.buffer';
 
-let blob = new buffer.Blob(['a', 'b', 'c']);
-let blob1 = new buffer.Blob(['a', 'b', 'c'], {endings:'native', type: 'MIME'});
+let blob: buffer.Blob  = new buffer.Blob(['a', 'b', 'c']);
+
+class option {
+  endings: string
+  type: string
+}
+let o1: option = {endings:'native', type: 'MIME'}
+let blob1: buffer.Blob = new buffer.Blob(['a', 'b', 'c'], o1);
 ```
 
 ### arrayBuffer
@@ -2932,10 +2945,12 @@ arrayBuffer(): Promise&lt;ArrayBuffer&gt;
 
 **示例：**
 ```ts
-let blob = new buffer.Blob(['a', 'b', 'c']);
+import buffer from '@ohos.buffer';
+
+let blob: buffer.Blob = new buffer.Blob(['a', 'b', 'c']);
 let pro = blob.arrayBuffer();
-pro.then(val => {
-  let uintarr = new Uint8Array(val);
+pro.then((val: ArrayBuffer) => {
+  let uintarr: Uint8Array = new Uint8Array(val);
   console.log(uintarr.toString());
 });
 ```
@@ -2962,7 +2977,9 @@ slice(start?: number, end?: number, type?: string): Blob
 
 **示例：**
 ```ts
-let blob = new buffer.Blob(['a', 'b', 'c']);
+import buffer from '@ohos.buffer';
+
+let blob: buffer.Blob = new buffer.Blob(['a', 'b', 'c']);
 let blob2 = blob.slice(0, 2);
 let blob3 = blob.slice(0, 2, "MIME");
 ```
@@ -2982,9 +2999,11 @@ text(): Promise&lt;string&gt;
 
 **示例：**
 ```ts
-let blob = new buffer.Blob(['a', 'b', 'c']);
+import buffer from '@ohos.buffer';
+
+let blob: buffer.Blob = new buffer.Blob(['a', 'b', 'c']);
 let pro = blob.text();
-pro.then(val => {
-    console.log(val)
+pro.then((val: string) => {
+  console.log(val)
 });
 ```
\ No newline at end of file
diff --git a/zh-cn/application-dev/reference/apis/js-apis-deque.md b/zh-cn/application-dev/reference/apis/js-apis-deque.md
index 53b7c9b23add423f17a31e208aa1403502bccc66..78cd11dee5ca7ced1a340937bacc6ad3c3f23818 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-deque.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-deque.md
@@ -51,7 +51,7 @@ Deque的构造函数。
 **示例：**
 
 ```ts
-let deque = new Deque();
+let deque: Deque<string | number | boolean | Object> = new Deque();
 ```
 
 ### insertFront
@@ -79,12 +79,16 @@ insertFront(element: T): void
 **示例：**
 
 ```ts
-let deque = new Deque();
+class C1 {
+  name: string
+  age: string
+}
+let deque: Deque<string | number | boolean | Array<number> | C1> = new Deque();
 deque.insertFront("a");
 deque.insertFront(1);
 let b = [1, 2, 3];
 deque.insertFront(b);
-let c = {name : "Dylon", age : "13"};
+let c: C1 = {name : "Dylon", age : "13"};
 deque.insertFront(c);
 deque.insertFront(false);
 ```
@@ -114,12 +118,17 @@ insertEnd(element: T): void
 **示例：**
 
 ```ts
-let deque = new Deque();
+class C1 {
+  name: string
+  age: string
+}
+
+let deque: Deque<string | number | boolean | Array<number> | C1> = new Deque();
 deque.insertEnd("a");
 deque.insertEnd(1);
 let b = [1, 2, 3];
 deque.insertEnd(b);
-let c = {name : "Dylon", age : "13"};
+let c: C1 = {name : "Dylon", age : "13"};
 deque.insertEnd(c);
 deque.insertEnd(false);
 ```
@@ -155,7 +164,7 @@ has(element: T): boolean
 **示例：**
 
 ```ts
-let deque = new Deque();
+let deque: Deque<string> = new Deque();
 deque.insertFront("squirrel");
 let result = deque.has("squirrel");
 ```
@@ -185,7 +194,7 @@ popFirst(): T
 **示例：**
 
 ```ts
-let deque = new Deque();
+let deque: Deque<number> = new Deque();
 deque.insertFront(2);
 deque.insertFront(4);
 deque.insertEnd(5);
@@ -219,7 +228,7 @@ popLast(): T
 **示例：**
 
 ```ts
-let deque = new Deque();
+let deque: Deque<number> = new Deque();
 deque.insertFront(2);
 deque.insertEnd(4);
 deque.insertFront(5);
@@ -263,13 +272,13 @@ callbackfn的参数说明：
 **示例：**
 
 ```ts
-let deque = new Deque();
+let deque: Deque<number> = new Deque();
 deque.insertFront(2);
 deque.insertEnd(4);
 deque.insertFront(5);
 deque.insertEnd(4);
-deque.forEach((value, index) => {
-    console.log("value:" + value, "index:" + index);
+deque.forEach((value: number, index: number) => {
+  console.log("value:" + value, "index:" + index);
 });
 ```
 
@@ -298,7 +307,7 @@ getFirst(): T
 **示例：**
 
 ```ts
-let deque = new Deque();
+let deque: Deque<number> = new Deque();
 deque.insertEnd(2);
 deque.insertEnd(4);
 deque.insertFront(5);
@@ -331,7 +340,7 @@ getLast(): T
 **示例：**
 
 ```ts
-let deque = new Deque();
+let deque: Deque<number> = new Deque();
 deque.insertFront(2);
 deque.insertFront(4);
 deque.insertFront(5);
@@ -363,15 +372,16 @@ let result = deque.getLast();
 
 **示例：**
 ```ts
-let deque = new Deque();
+let deque: Deque<number> = new Deque();
 deque.insertFront(2);
 deque.insertFront(4);
 deque.insertFront(5);
 deque.insertFront(4);
 
 // 使用方法一：
-for (let item of deque) { 
-  console.log("value:" + item); 
+let nums: Array<number> = Array.from(deque)
+for (let item of nums) {
+  console.log("value:" + item);
 }
 
 // 使用方法二：
diff --git a/zh-cn/application-dev/reference/apis/js-apis-hashmap.md b/zh-cn/application-dev/reference/apis/js-apis-hashmap.md
index 09bc18d8ea3c14d32c02aeb1ea8245905569ef0e..3b7d17589fb1468c435cbf286913c2a3a3b94369 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-hashmap.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-hashmap.md
@@ -53,7 +53,7 @@ HashMap的构造函数。
 **示例：**
 
 ```ts
-let hashMap = new HashMap();
+let hashMap: HashMap<string, number> = new HashMap();
 ```
 
 
@@ -82,7 +82,7 @@ isEmpty(): boolean
 **示例：**
 
 ```ts
-const hashMap = new HashMap();
+const hashMap: HashMap<string, number> = new HashMap();
 let result = hashMap.isEmpty();
 ```
 
@@ -118,7 +118,7 @@ hasKey(key: K): boolean
 **示例：**
 
 ```ts
-let hashMap = new HashMap();
+const hashMap: HashMap<string, number> = new HashMap();
 hashMap.set("squirrel", 123);
 let result = hashMap.hasKey("squirrel");
 ```
@@ -155,7 +155,7 @@ hasValue(value: V): boolean
 **示例：**
 
 ```ts
-let hashMap = new HashMap();
+const hashMap: HashMap<string, number> = new HashMap();
 hashMap.set("squirrel", 123);
 let result = hashMap.hasValue(123);
 ```
@@ -192,7 +192,7 @@ get(key: K): V
 **示例：**
 
 ```ts
-let hashMap = new HashMap();
+const hashMap: HashMap<string, number> = new HashMap();
 hashMap.set("squirrel", 123);
 hashMap.set("sparrow", 356);
 let result = hashMap.get("sparrow");
@@ -224,10 +224,10 @@ setAll(map: HashMap<K, V>): void
 **示例：**
 
 ```ts
-let hashMap = new HashMap();
+const hashMap: HashMap<string, number> = new HashMap();
 hashMap.set("squirrel", 123);
 hashMap.set("sparrow", 356);
-let newHashMap = new HashMap();
+let newHashMap: HashMap<string, number> = new HashMap();
 newHashMap.set("newMap", 99);
 hashMap.setAll(newHashMap);
 ```
@@ -265,7 +265,7 @@ set(key: K, value: V): Object
 **示例：**
 
 ```ts
-let hashMap = new HashMap();
+let hashMap: HashMap<string, number> = new HashMap();
 let result = hashMap.set("squirrel", 123);
 ```
 
@@ -301,7 +301,7 @@ remove(key: K): V
 **示例：**
 
 ```ts
-let hashMap = new HashMap();
+let hashMap: HashMap<string, number> = new HashMap();
 hashMap.set("squirrel", 123);
 hashMap.set("sparrow", 356);
 let result = hashMap.remove("sparrow");
@@ -327,7 +327,7 @@ clear(): void
 **示例：**
 
 ```ts
-let hashMap = new HashMap();
+let hashMap: HashMap<string, number> = new HashMap();
 hashMap.set("squirrel", 123);
 hashMap.set("sparrow", 356);
 hashMap.clear();
@@ -359,14 +359,14 @@ keys(): IterableIterator&lt;K&gt;
 **示例：**
 
 ```ts
-let hashMap = new HashMap();
+let hashMap: HashMap<string, number> = new HashMap();
 hashMap.set("squirrel", 123);
 hashMap.set("sparrow", 356);
 let iter = hashMap.keys();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("value:" + temp);
-  temp = iter.next().value;
+let temp = iter.next();
+while(!temp.done) {
+  console.log("value:" + temp.value);
+  temp = iter.next();
 }
 ```
 
@@ -396,14 +396,14 @@ values(): IterableIterator&lt;V&gt;
 **示例：**
 
 ```ts
-let hashMap = new HashMap();
+let hashMap: HashMap<string, number> = new HashMap();
 hashMap.set("squirrel", 123);
 hashMap.set("sparrow", 356);
 let iter = hashMap.values();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("value:" + temp);
-  temp = iter.next().value;
+let temp = iter.next();
+while(!temp.done) {
+  console.log("value:" + temp.value);
+  temp = iter.next();
 }
 ```
 
@@ -440,7 +440,7 @@ replace(key: K, newValue: V): boolean
 **示例：**
 
 ```ts
-let hashMap = new HashMap();
+let hashMap: HashMap<string, number> = new HashMap();
 hashMap.set("sparrow", 123);
 let result = hashMap.replace("sparrow", 357);
 ```
@@ -479,11 +479,11 @@ callbackfn的参数说明：
 **示例：**
 
 ```ts
-let hashMap = new HashMap();
+let hashMap: HashMap<string, number> = new HashMap();
 hashMap.set("sparrow", 123);
 hashMap.set("gull", 357);
-hashMap.forEach((value, key) => {
-    console.log("value:" + value, "key:" + key);
+hashMap.forEach((value: number, key: string) => {
+  console.log("value:" + value, "key:" + key);
 });
 ```
 
@@ -513,15 +513,15 @@ entries(): IterableIterator&lt;[K, V]&gt;
 **示例：**
 
 ```ts
-let hashMap = new HashMap();
+let hashMap: HashMap<string, number> = new HashMap();
 hashMap.set("squirrel", 123);
 hashMap.set("sparrow", 356);
 let iter = hashMap.entries();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("key:" + temp[0]);
-  console.log("value:" + temp[1]);
-  temp = iter.next().value;
+let temp = iter.next();
+while(!temp.done) {
+  console.log("key:" + temp.value[0]);
+  console.log("value:" + temp.value[1]);
+  temp = iter.next();
 }
 ```
 
@@ -550,7 +550,7 @@ while(temp != undefined) {
 
 **示例：**
 ```ts
-let hashMap = new HashMap();
+let hashMap: HashMap<string, number> = new HashMap();
 hashMap.set("squirrel", 123);
 hashMap.set("sparrow", 356);
 
diff --git a/zh-cn/application-dev/reference/apis/js-apis-hashset.md b/zh-cn/application-dev/reference/apis/js-apis-hashset.md
index 271f205dd59956d677d97f1da26e51d3f41e6ce9..c005c709c1d7622e76a0daa2e5ec4023462a957f 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-hashset.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-hashset.md
@@ -33,7 +33,7 @@ import HashSet from '@ohos.util.HashSet';
 **示例：**
 
 ```ts
-let hashSet = new HashSet();
+let hashSet: HashSet<number> = new HashSet();
 hashSet.add(1);
 hashSet.add(2);
 hashSet.add(3);
@@ -61,7 +61,7 @@ HashSet的构造函数。
 **示例：**
 
 ```ts
-let hashSet = new HashSet();
+let hashSet: HashSet<number> = new HashSet();
 ```
 
 
@@ -90,7 +90,7 @@ isEmpty(): boolean
 **示例：**
 
 ```ts
-const hashSet = new HashSet();
+const hashSet: HashSet<number> = new HashSet();
 let result = hashSet.isEmpty();
 ```
 
@@ -126,7 +126,7 @@ has(value: T): boolean
 **示例：**
 
 ```ts
-let hashSet = new HashSet();
+let hashSet: HashSet<string> = new HashSet();
 hashSet.add("squirrel");
 let result = hashSet.has("squirrel");
 ```
@@ -163,7 +163,7 @@ add(value: T): boolean
 **示例：**
 
 ```ts
-let hashSet = new HashSet();
+let hashSet: HashSet<string> = new HashSet();
 let result = hashSet.add("squirrel");
 ```
 
@@ -199,7 +199,7 @@ remove(value: T): boolean
 **示例：**
 
 ```ts
-let hashSet = new HashSet();
+let hashSet: HashSet<string> = new HashSet();
 hashSet.add("squirrel");
 hashSet.add("sparrow");
 let result = hashSet.remove("sparrow");
@@ -225,7 +225,7 @@ clear(): void
 **示例：**
 
 ```ts
-let hashSet = new HashSet();
+let hashSet: HashSet<string> = new HashSet();
 hashSet.add("squirrel");
 hashSet.add("sparrow");
 hashSet.clear();
@@ -257,14 +257,14 @@ values(): IterableIterator&lt;T&gt;
 **示例：**
 
 ```ts
-let hashSet = new HashSet();
+let hashSet: HashSet<string> = new HashSet();
 hashSet.add("squirrel");
 hashSet.add("sparrow");
 let iter = hashSet.values();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("value:" + temp);
-  temp = iter.next().value;
+let temp = iter.next();
+while(!temp.done) {
+  console.log("value:" + temp.value);
+  temp = iter.next();
 }
 ```
 
@@ -302,11 +302,11 @@ callbackfn的参数说明：
 **示例：**
 
 ```ts
-let hashSet = new HashSet();
+let hashSet: HashSet<string> = new HashSet();
 hashSet.add("sparrow");
 hashSet.add("squirrel");
-hashSet.forEach((value, key) => {
-    console.log("value:" + value, "key:" + key);
+hashSet.forEach((value: string, key: string) => {
+  console.log("value:" + value, "key:" + key);
 });
 ```
 
@@ -335,15 +335,15 @@ entries(): IterableIterator<[T, T]>
 **示例：**
 
 ```ts
-let hashSet = new HashSet();
+let hashSet: HashSet<string> = new HashSet();
 hashSet.add("squirrel");
 hashSet.add("sparrow");
 let iter = hashSet.entries();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("key:" + temp[0]);
-  console.log("value:" + temp[1]);
-  temp = iter.next().value;
+let temp = iter.next();
+while(!temp.done) {
+  console.log("key:" + temp.value[0]);
+  console.log("value:" + temp.value[1]);
+  temp = iter.next();
 }
 ```
 
@@ -373,20 +373,21 @@ while(temp != undefined) {
 **示例：**
 
 ```ts
-let hashSet = new HashSet();
+let hashSet: HashSet<string> = new HashSet();
 hashSet.add("squirrel");
 hashSet.add("sparrow");
 
 // 使用方法一：
-for (let item of hashSet) { 
+let val: Array<string> = Array.from(hashSet.values())
+for (let item of val) {
   console.log("value: " + item);
 }
 
 // 使用方法二：
 let iter = hashSet[Symbol.iterator]();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("value: " + temp);
-  temp = iter.next().value;
+let temp = iter.next();
+while(!temp.done) {
+  console.log("value: " + temp.value);
+  temp = iter.next();
 }
 ```
\ No newline at end of file
diff --git a/zh-cn/application-dev/reference/apis/js-apis-lightweightmap.md b/zh-cn/application-dev/reference/apis/js-apis-lightweightmap.md
index 25c16fc8d59372933640b80ac32e4faf394243c4..8fba1f137b9d741627a716cf9e151fa42e276469 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-lightweightmap.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-lightweightmap.md
@@ -56,7 +56,7 @@ LightWeightMap的构造函数。
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 ```
 
 
@@ -85,7 +85,7 @@ isEmpty(): boolean
 **示例：**
 
 ```ts
-const lightWeightMap = new LightWeightMap();
+const lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 let result = lightWeightMap.isEmpty();
 ```
 
@@ -121,10 +121,10 @@ hasAll(map: LightWeightMap<K, V>): boolean
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
-let map = new LightWeightMap();
+let map: LightWeightMap<string, number> = new LightWeightMap();
 map.set("sparrow", 356);
 let result = lightWeightMap.hasAll(map);
 ```
@@ -161,7 +161,7 @@ hasKey(key: K): boolean;
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 let result = lightWeightMap.hasKey("squirrel");
 ```
@@ -198,7 +198,7 @@ hasValue(value: V): boolean
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 let result = lightWeightMap.hasValue(123);
 ```
@@ -229,7 +229,7 @@ increaseCapacityTo(minimumCapacity: number): void
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.increaseCapacityTo(10);
 ```
 
@@ -265,7 +265,7 @@ get(key: K): V
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
 let result = lightWeightMap.get("sparrow");
@@ -303,7 +303,7 @@ getIndexOfKey(key: K): number
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
 let result = lightWeightMap.getIndexOfKey("sparrow");
@@ -341,7 +341,7 @@ getIndexOfValue(value: V): number
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
 let result = lightWeightMap.getIndexOfValue(123);
@@ -380,7 +380,7 @@ getKeyAt(index: number): K
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
 let result = lightWeightMap.getKeyAt(1);
@@ -412,10 +412,10 @@ setAll(map: LightWeightMap<K, V>): void
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
-let map = new LightWeightMap();
+let map: LightWeightMap<string, number> = new LightWeightMap();
 map.setAll(lightWeightMap); // 将lightWeightMap中所有的元素添加到map中
 ```
 
@@ -451,7 +451,7 @@ set(key: K, value: V): Object
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 let result = lightWeightMap.set("squirrel", 123);
 ```
 
@@ -487,7 +487,7 @@ remove(key: K): V
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
 lightWeightMap.remove("sparrow");
@@ -525,7 +525,7 @@ removeAt(index: number): boolean
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
 let result = lightWeightMap.removeAt(1);
@@ -565,7 +565,7 @@ setValueAt(index: number, newValue: V): boolean
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
 lightWeightMap.setValueAt(1, 3546);
@@ -604,7 +604,7 @@ getValueAt(index: number): V
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
 let result = lightWeightMap.getValueAt(1);
@@ -630,7 +630,7 @@ clear(): void
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
 lightWeightMap.clear();
@@ -662,14 +662,14 @@ keys(): IterableIterator&lt;K&gt;
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
 let iter = lightWeightMap.keys();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("value:" + temp);
-  temp = iter.next().value;
+let temp = iter.next();
+while(!temp.done) {
+  console.log("value:" + temp.value);
+  temp = iter.next();
 }
 ```
 
@@ -699,14 +699,14 @@ values(): IterableIterator&lt;V&gt;
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
 let iter = lightWeightMap.values();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("value:" + temp);
-  temp = iter.next().value;
+let temp = iter.next();
+while(!temp.done) {
+  console.log("value:" + temp.value);
+  temp = iter.next();
 }
 ```
 
@@ -744,11 +744,11 @@ callbackfn的参数说明：
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("sparrow", 123);
 lightWeightMap.set("gull", 357);
-lightWeightMap.forEach((value, key) => {
-    console.log("value:" + value, "key:" + key);
+lightWeightMap.forEach((value: number, key: string) => {
+  console.log("value:" + value, "key:" + key);
 });
 ```
 
@@ -778,15 +778,15 @@ entries(): IterableIterator<[K, V]>
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
 let iter = lightWeightMap.entries();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("key:" + temp[0]);
-  console.log("value:" + temp[1]);
-  temp = iter.next().value;
+let temp = iter.next();
+while(!temp.done) {
+  console.log("key:" + temp.value[0]);
+  console.log("value:" + temp.value[1]);
+  temp = iter.next();
 }
 ```
 
@@ -815,7 +815,7 @@ toString(): String
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
 let result = lightWeightMap.toString();
@@ -846,22 +846,27 @@ let result = lightWeightMap.toString();
 **示例：**
 
 ```ts
-let lightWeightMap = new LightWeightMap();
+let lightWeightMap: LightWeightMap<string, number> = new LightWeightMap();
 lightWeightMap.set("squirrel", 123);
 lightWeightMap.set("sparrow", 356);
 
 // 使用方法一：
-for (let item of lightWeightMap) { 
-  console.log("key:" + item[0]);
-  console.log("value:" + item[1]);
+let nums = Array.from(lightWeightMap.values());
+for (let item1 of nums) {
+  console.log("value:" + item1);
+}
+
+let key = Array.from(lightWeightMap.keys());
+for (let item2 of key) {
+  console.log("key:" + item2);
 }
 
 // 使用方法二：
 let iter = lightWeightMap[Symbol.iterator]();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("key:" + temp[0]);
-  console.log("value:" + temp[1]);
-  temp = iter.next().value;
+let temp = iter.next();
+while(!temp.done) {
+  console.log("key:" + temp.value[0]);
+  console.log("value:" + temp.value[1]);
+  temp = iter.next();
 }
 ```
\ No newline at end of file
diff --git a/zh-cn/application-dev/reference/apis/js-apis-lightweightset.md b/zh-cn/application-dev/reference/apis/js-apis-lightweightset.md
index 06c0427308311578d17711cd69368634aa4e73e2..a17e0d730b7f1908159818ce6aa73cdd19fdfabf 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-lightweightset.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-lightweightset.md
@@ -54,7 +54,7 @@ LightWeightSet的构造函数。
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<number | string> = new LightWeightSet();
 ```
 
 
@@ -83,7 +83,7 @@ isEmpty(): boolean
 **示例：**
 
 ```ts
-const lightWeightSet = new LightWeightSet();
+const lightWeightSet: LightWeightSet<number> = new LightWeightSet();
 let result = lightWeightSet.isEmpty();
 ```
 
@@ -118,7 +118,7 @@ add(obj: T): boolean
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 let result = lightWeightSet.add("squirrel");
 ```
 
@@ -148,10 +148,10 @@ addAll(set: LightWeightSet&lt;T&gt;): boolean
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.add("squirrel");
 lightWeightSet.add("sparrow");
-let set = new LightWeightSet();
+let set: LightWeightSet<string> = new LightWeightSet();
 set.add("gull");
 let result = lightWeightSet.addAll(set);
 ```
@@ -188,10 +188,10 @@ hasAll(set: LightWeightSet&lt;T&gt;): boolean
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.add("squirrel");
 lightWeightSet.add("sparrow");
-let set = new LightWeightSet();
+let set: LightWeightSet<string> = new LightWeightSet();
 set.add("sparrow");
 let result = lightWeightSet.hasAll(set);
 ```
@@ -228,7 +228,7 @@ has(key: T): boolean
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.add(123);
 let result = lightWeightSet.has(123);
 ```
@@ -265,7 +265,7 @@ equal(obj: Object): boolean
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.add("squirrel");
 lightWeightSet.add("sparrow");
 let obj = ["sparrow", "squirrel"];
@@ -299,7 +299,7 @@ increaseCapacityTo(minimumCapacity: number): void
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.increaseCapacityTo(10);
 ```
 
@@ -335,7 +335,7 @@ getIndexOf(key: T): number
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.add("squirrel");
 lightWeightSet.add("sparrow");
 let result = lightWeightSet.getIndexOf("sparrow");
@@ -373,7 +373,7 @@ remove(key: T): T
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.add("squirrel");
 lightWeightSet.add("sparrow");
 let result = lightWeightSet.remove("sparrow");
@@ -411,7 +411,7 @@ removeAt(index: number): boolean
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.add("squirrel");
 lightWeightSet.add("sparrow");
 let result = lightWeightSet.removeAt(1);
@@ -449,7 +449,7 @@ getValueAt(index: number): T
 **参数：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.add("squirrel");
 lightWeightSet.add("sparrow");
 let result = lightWeightSet.getValueAt(1);
@@ -475,7 +475,7 @@ clear(): void
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.add("squirrel");
 lightWeightSet.add("sparrow");
 lightWeightSet.clear();
@@ -499,7 +499,7 @@ toString(): String
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.add("squirrel");
 lightWeightSet.add("sparrow");
 let result = lightWeightSet.toString();
@@ -531,7 +531,7 @@ toArray(): Array&lt;T&gt;
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.add("squirrel");
 lightWeightSet.add("sparrow");
 let result = lightWeightSet.toArray();
@@ -563,7 +563,7 @@ values(): IterableIterator&lt;T&gt;
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.add("squirrel");
 lightWeightSet.add("sparrow");
 let iter = lightWeightSet.values();
@@ -608,11 +608,11 @@ callbackfn的参数说明：
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.add("sparrow");
 lightWeightSet.add("gull");
-lightWeightSet.forEach((value, key) => {
-    console.log("value:" + value, "key:" + key);
+lightWeightSet.forEach((value:string, key:string) => {
+  console.log("value:" + value, "key:" + key);
 });
 ```
 
@@ -642,7 +642,7 @@ entries(): IterableIterator<[T, T]>
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.add("squirrel");
 lightWeightSet.add("sparrow");
 let iter = lightWeightSet.entries();
@@ -679,20 +679,21 @@ while(index < lightWeightSet.length) {
 **示例：**
 
 ```ts
-let lightWeightSet = new LightWeightSet();
+let lightWeightSet: LightWeightSet<string> = new LightWeightSet();
 lightWeightSet.add("squirrel");
 lightWeightSet.add("sparrow");
 
 // 使用方法一：
-for (let item of lightWeightSet) { 
+let nums: Array<string> = lightWeightSet.toArray()
+for (let item of nums) {
   console.log("value:" + item);
 }
 
 // 使用方法二：
 let iter = lightWeightSet[Symbol.iterator]();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("value:" + temp);
-  temp = iter.next().value;
+let temp = iter.next();
+while(!temp.done) {
+  console.log("value:" + temp.value);
+  temp = iter.next();
 }
 ```
\ No newline at end of file
diff --git a/zh-cn/application-dev/reference/apis/js-apis-queue.md b/zh-cn/application-dev/reference/apis/js-apis-queue.md
index 2e395bfba07d63f94606b295d5920d2c30a80965..4d5d035a775eeb6645af22f5ece39aedaed1f955 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-queue.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-queue.md
@@ -51,7 +51,7 @@ Queue的构造函数。
 **示例：**
 
 ```ts
-let queue = new Queue();
+let queue : Queue<number | string | Object> = new Queue();
 ```
 
 
@@ -86,12 +86,16 @@ add(element: T): boolean
 **示例：**
 
 ```ts
-let queue = new Queue();
+class C1 {
+  name: string = ""
+  age: string = ""
+}
+let queue : Queue<number | string | C1 | number[]> = new Queue();
 let result = queue.add("a");
 let result1 = queue.add(1);
 let b = [1, 2, 3];
 let result2 = queue.add(b);
-let c = {name : "Dylon", age : "13"};
+let c : C1 = {name : "Dylon", age : "13"};
 let result3 = queue.add(c);
 ```
 
@@ -120,7 +124,7 @@ pop(): T
 **示例：**
 
 ```ts
-let queue = new Queue();
+let queue : Queue<number> = new Queue();
 queue.add(2);
 queue.add(4);
 queue.add(5);
@@ -154,7 +158,7 @@ getFirst(): T
 **示例：**
 
 ```ts
-let queue = new Queue();
+let queue : Queue<number> = new Queue();
 queue.add(2);
 queue.add(4);
 queue.add(5);
@@ -197,13 +201,13 @@ callbackfn的参数说明：
 **示例：**
 
 ```ts
-let queue = new Queue();
+let queue : Queue<number> = new Queue();
 queue.add(2);
 queue.add(4);
 queue.add(5);
 queue.add(4);
-queue.forEach((value, index) => {
-    console.log("value:" + value, "index:" + index);
+queue.forEach((value : number, index : number) : void => {
+  console.log("value:" + value, "index:" + index);
 });
 ```
 
@@ -231,15 +235,16 @@ queue.forEach((value, index) => {
 
 **示例：**
 ```ts
-let queue = new Queue();
+let queue : Queue<number> = new Queue();
 queue.add(2);
 queue.add(4);
 queue.add(5);
 queue.add(4);
 
 // 使用方法一：
-for (let item of queue) { 
-  console.log("value:" + item); 
+while(queue.length) {
+  let item = queue.pop()
+  console.log("value:" + item);
 }
 
 // 使用方法二：
diff --git a/zh-cn/application-dev/reference/apis/js-apis-stack.md b/zh-cn/application-dev/reference/apis/js-apis-stack.md
index 6569b0eb4ee259dc817cef8f394d84be878802ee..f8f3db16bc3f2d205c94c0aaca34ae13247e30df 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-stack.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-stack.md
@@ -50,7 +50,7 @@ Stack的构造函数。
 **示例：**
 
 ```ts
-let stack = new Stack();
+let stack : Stack<number | string | Object> = new Stack();
 ```
 
 
@@ -84,13 +84,17 @@ push(item: T): T
 
 **示例：**
 
-```ts
-let stack = new Stack();
+```
+class C1 {
+  name: string = ""
+  age: string = ""
+}
+let stack : Stack<number | string | C1> = new Stack();
 let result = stack.push("a");
 let result1 = stack.push(1);
 let b = [1, 2, 3];
 let result2 = stack.push(b);
-let c = {name : "Dylon", age : "13"};
+let c : C1  = {name : "Dylon", age : "13"};
 let result3 = stack.push(c);
 ```
 
@@ -119,7 +123,7 @@ pop(): T
 **示例：**
 
 ```ts
-let stack = new Stack();
+let stack : Stack<number> = new Stack();
 stack.push(2);
 stack.push(4);
 stack.push(5);
@@ -153,7 +157,7 @@ peek(): T
 **示例：**
 
 ```ts
-let stack = new Stack();
+let stack : Stack<number> = new Stack();
 stack.push(2);
 stack.push(4);
 stack.push(5);
@@ -192,7 +196,7 @@ locate(element: T): number
 **示例：**
 
 ```ts
-let stack = new Stack();
+let stack : Stack<number> = new Stack();
 stack.push(2);
 stack.push(4);
 stack.push(5);
@@ -235,13 +239,13 @@ callbackfn的参数说明：
 **示例：**
 
 ```ts
-let stack = new Stack();
+let stack : Stack<number> = new Stack();
 stack.push(2);
 stack.push(4);
 stack.push(5);
 stack.push(4);
-stack.forEach((value, index) => {
-    console.log("value:" + value, "index:" + index);
+stack.forEach((value : number, index : number) :void => {
+  console.log("value:" + value, "index:" + index);
 });
 ```
 
@@ -270,7 +274,7 @@ isEmpty(): boolean
 **示例：**
 
 ```ts
-let stack = new Stack();
+let stack : Stack<number> = new Stack();
 stack.push(2);
 stack.push(4);
 stack.push(5);
@@ -302,15 +306,17 @@ let result = stack.isEmpty();
 
 **示例：**
 ```ts
-let stack = new Stack();
+let stack : Stack<number> = new Stack();
 stack.push(2);
 stack.push(4);
 stack.push(5);
 stack.push(4);
 
 // 使用方法一：
-for (let item of stack) { 
-  console.log("value:" + item); 
+while(!stack.isEmpty()) {
+  // 业务逻辑
+  let item = stack.pop()
+  console.log("value:" + item);
 }
 
 // 使用方法二：
diff --git a/zh-cn/application-dev/reference/apis/js-apis-treemap.md b/zh-cn/application-dev/reference/apis/js-apis-treemap.md
index 439e6c1d006929a558b1becb2ff8591cf2161282..b8ebb8f4696687555f293e8e8d2b02660a582d28 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-treemap.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-treemap.md
@@ -61,7 +61,7 @@ TreeMap的构造函数。
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<number, number> = new TreeMap();
 ```
 
 
@@ -90,7 +90,7 @@ isEmpty(): boolean
 **示例：**
 
 ```ts
-const treeMap = new TreeMap();
+let treeMap : TreeMap<number, number> = new TreeMap();
 let result = treeMap.isEmpty();
 ```
 
@@ -126,7 +126,7 @@ hasKey(key: K): boolean
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("squirrel", 123);
 let result = treeMap.hasKey("squirrel");
 ```
@@ -163,7 +163,7 @@ hasValue(value: V): boolean
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("squirrel", 123);
 let result = treeMap.hasValue(123);
 ```
@@ -200,7 +200,7 @@ get(key: K): V
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("squirrel", 123);
 treeMap.set("sparrow", 356);
 let result = treeMap.get("sparrow");
@@ -232,7 +232,7 @@ getFirstKey(): K
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("squirrel", 123);
 treeMap.set("sparrow", 356);
 let result = treeMap.getFirstKey();
@@ -264,7 +264,7 @@ getLastKey(): K
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("squirrel", 123);
 treeMap.set("sparrow", 356);
 let result = treeMap.getLastKey();
@@ -296,13 +296,13 @@ setAll(map: TreeMap<K, V>): void
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("squirrel", 123);
 treeMap.set("sparrow", 356);
-let map = new TreeMap();
+let map : TreeMap<string, number> = new TreeMap();
 map.set("demo", 12);
 map.setAll(treeMap); // 将treeMap中的所有元素添加到map中
-map.forEach((value, key) => {
+map.forEach((value : number, key : string) : void => {
   console.log("value" + value, "key" + key); // 打印结果 12 demo、356 sparrow、123 squirrel
 })
 ```
@@ -340,7 +340,7 @@ set(key: K, value: V): Object
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("squirrel", 123);
 ```
 
@@ -376,7 +376,7 @@ remove(key: K): V
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("squirrel", 123);
 treeMap.set("sparrow", 356);
 let result = treeMap.remove("sparrow");
@@ -414,7 +414,7 @@ getLowerKey(key: K): K
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("squirrel", 123);
 treeMap.set("sparrow", 356);
 treeMap.set("gander", 356);
@@ -453,7 +453,7 @@ getHigherKey(key: K): K
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("squirrel", 123);
 treeMap.set("sparrow", 356);
 treeMap.set("gander", 356);
@@ -492,7 +492,7 @@ replace(key: K, newValue: V): boolean
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("sparrow", 123);
 let result = treeMap.replace("sparrow", 357);
 ```
@@ -517,7 +517,7 @@ clear(): void
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("squirrel", 123);
 treeMap.set("sparrow", 356);
 treeMap.clear();
@@ -549,14 +549,14 @@ keys(): IterableIterator&lt;K&gt;
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("squirrel", 123);
 treeMap.set("sparrow", 356);
-let iter = treeMap.keys();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("value:" + temp);
-  temp = iter.next().value;
+let it = treeMap.values();
+let t = it.next();
+while(!t.done) {
+  console.log(t.value);
+  t = it.next()
 }
 ```
 
@@ -586,14 +586,14 @@ values(): IterableIterator&lt;V&gt;
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("squirrel", 123);
 treeMap.set("sparrow", 356);
-let iter = treeMap.values();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("value:" + temp);
-  temp = iter.next().value;
+let it = treeMap.values();
+let t = it.next();
+while(!t.done) {
+  console.log(t.value);
+  t = it.next()
 }
 ```
 
@@ -631,11 +631,11 @@ callbackFn的参数说明：
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("sparrow", 123);
 treeMap.set("gull", 357);
-treeMap.forEach((value, key) => {
-    console.log("value:" + value, "key:" + key);
+treeMap.forEach((value : number, key : string) : void => {
+  console.log("value:" + value, "key:" + key);
 });
 ```
 
@@ -665,15 +665,14 @@ entries(): IterableIterator<[K, V]>
 **示例：**
 
 ```ts
-let treeMap = new TreeMap();
+let treeMap : TreeMap<string, number> = new TreeMap();
 treeMap.set("squirrel", 123);
 treeMap.set("sparrow", 356);
-let iter = treeMap.entries();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("key:" + temp[0]);
-  console.log("value:" + temp[1]);
-  temp = iter.next().value;
+let it = treeMap.entries();
+let t = it.next();
+while(!t.done) {
+  console.log(t.value);
+  t = it.next()
 }
 ```
 
@@ -707,10 +706,11 @@ treeMap.set("squirrel", 123);
 treeMap.set("sparrow", 356);
 
 // 使用方法一：
-for (let item of treeMap) { 
-  console.log("key:" + item[0]);
-  console.log("value:" + item[1]);
-}
+let it = treeMap.entries();
+let t = it.next();
+while(!t.done) {
+  console.log(t.value);
+  t = it.next()
 
 // 使用方法二：
 let iter = treeMap[Symbol.iterator]();
diff --git a/zh-cn/application-dev/reference/apis/js-apis-treeset.md b/zh-cn/application-dev/reference/apis/js-apis-treeset.md
index 5bec11a44f1f995c287f3261e827ebc3a8b38a92..15d2f21484e732428c828e95925b925929f5231c 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-treeset.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-treeset.md
@@ -57,7 +57,7 @@ TreeSet的构造函数。
 **示例：**
 
 ```ts
-let treeSet = new TreeSet();
+let treeSet : TreeSet<string | number | boolean | Object> = new TreeSet();
 ```
 
 
@@ -86,7 +86,7 @@ isEmpty(): boolean
 **示例：**
 
 ```ts
-const treeSet = new TreeSet();
+const treeSet : TreeSet<string | number | boolean | Object>  = new TreeSet();
 let result = treeSet.isEmpty();
 ```
 
@@ -122,12 +122,11 @@ has(value: T): boolean
 **示例：**
 
 ```ts
-let treeSet = new TreeSet();
+let treeSet : TreeSet<number> = new TreeSet();
 treeSet.add(123);
 let result = treeSet.has(123);
 ```
 
-
 ### getFirstValue
 
 getFirstValue(): T
@@ -153,7 +152,7 @@ getFirstValue(): T
 **示例：**
 
 ```ts
-let treeSet = new TreeSet();
+let treeSet : TreeSet<string> = new TreeSet();
 treeSet.add("squirrel");
 treeSet.add("sparrow");
 let result = treeSet.getFirstValue();
@@ -185,7 +184,7 @@ getLastValue(): T
 **示例：**
 
 ```ts
-let treeSet = new TreeSet();
+let treeSet : TreeSet<string> = new TreeSet();
 treeSet.add("squirrel");
 treeSet.add("sparrow");
 let result = treeSet.getLastValue();
@@ -223,7 +222,7 @@ add(value: T): boolean
 **示例：**
 
 ```ts
-let treeSet = new TreeSet();
+let treeSet : TreeSet<string> = new TreeSet();
 let result = treeSet.add("squirrel");
 ```
 
@@ -259,7 +258,7 @@ remove(value: T): boolean
 **示例：**
 
 ```ts
-let treeSet = new TreeSet();
+let treeSet : TreeSet<string> = new TreeSet();
 treeSet.add("squirrel");
 treeSet.add("sparrow");
 let result = treeSet.remove("sparrow");
@@ -297,7 +296,7 @@ getLowerValue(key: T): T
 **示例：**
 
 ```ts
-let treeSet = new TreeSet();
+let treeSet : TreeSet<string> = new TreeSet();
 treeSet.add("squirrel");
 treeSet.add("sparrow");
 treeSet.add("gander");
@@ -336,7 +335,7 @@ getHigherValue(key: T): T
 **示例：**
 
 ```ts
-let treeSet = new TreeSet();
+let treeSet : TreeSet<string> = new TreeSet();
 treeSet.add("squirrel");
 treeSet.add("sparrow");
 treeSet.add("gander");
@@ -369,7 +368,7 @@ popFirst(): T
 **示例：**
 
 ```ts
-let treeSet = new TreeSet();
+let treeSet : TreeSet<string> = new TreeSet();
 treeSet.add("squirrel");
 treeSet.add("sparrow");
 let result = treeSet.popFirst();
@@ -401,7 +400,7 @@ popLast(): T
 **示例：**
 
 ```ts
-let treeSet = new TreeSet();
+let treeSet : TreeSet<string> = new TreeSet();
 treeSet.add("squirrel");
 treeSet.add("sparrow");
 let result = treeSet.popLast();
@@ -427,7 +426,7 @@ clear(): void
 **示例：**
 
 ```ts
-let treeSet = new TreeSet();
+let treeSet : TreeSet<string> = new TreeSet();
 treeSet.add("squirrel");
 treeSet.add("sparrow");
 treeSet.clear();
@@ -459,14 +458,14 @@ values(): IterableIterator&lt;T&gt;
 **示例：**
 
 ```ts
-let treeSet = new TreeSet();
+let treeSet : TreeSet<string> = new TreeSet();
 treeSet.add("squirrel");
 treeSet.add("sparrow");
-let iter = treeSet.values();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("value:" + temp);
-  temp = iter.next().value;
+let it = treeSet.values();
+let t = it.next();
+while(!t.done) {
+  console.log(t.value);
+  t = it.next()
 }
 ```
 
@@ -504,11 +503,11 @@ callbackFn的参数说明：
 **示例：**
 
 ```ts
-let treeSet = new TreeSet();
+let treeSet : TreeSet<string> = new TreeSet();
 treeSet.add("sparrow");
 treeSet.add("gull");
-treeSet.forEach((value, key) => {
-    console.log("value:" + value, "key:" + key);
+treeSet.forEach((value : string, key : string) :void => {
+  console.log("value:" + value, "key:" + key);
 });
 ```
 
@@ -538,15 +537,14 @@ entries(): IterableIterator<[T, T]>
 **示例：**
 
 ```ts
-let treeSet = new TreeSet();
+let treeSet : TreeSet<string> = new TreeSet();
 treeSet.add("squirrel");
 treeSet.add("sparrow");
-let iter = treeSet.entries();
-let temp = iter.next().value;
-while(temp != undefined) {
-  console.log("key:" + temp[0]);
-  console.log("value:" + temp[1]);
-  temp = iter.next().value;
+let it = treeSet.entries();
+let t = it.next();
+while(!t.done) {
+  console.log(t.value);
+  t = it.next()
 }
 ```
 
@@ -576,15 +574,15 @@ while(temp != undefined) {
 **示例：**
 
 ```ts
-let treeSet = new TreeSet();
+
+let treeSet : TreeSet<string> = new TreeSet();
 treeSet.add("squirrel");
 treeSet.add("sparrow");
-  
+let numbers = Array.from(treeSet.values())
 // 使用方法一：
-for (let item of treeSet) { 
+for (let item of numbers) {
   console.log("value:" + item);
 }
-
 // 使用方法二：
 let iter = treeSet[Symbol.iterator]();
 let temp = iter.next().value;
diff --git a/zh-cn/application-dev/reference/apis/js-apis-vector.md b/zh-cn/application-dev/reference/apis/js-apis-vector.md
index c497f8b3afccefe75d5c97855c1cdf026d7beac7..a01b694cf650e4f7b57f7b33d549ae00f44975fd 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-vector.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-vector.md
@@ -44,7 +44,7 @@ Vector的构造函数。
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<string | number | C1 | Array<number>> = new Vector();
 ```
 
 
@@ -71,12 +71,16 @@ add(element: T): boolean
 **示例：**
 
 ```ts
-let vector = new Vector();
+class C1 {
+  name: string = ""
+  age: string = ""
+}
+let vector : Vector<string | number | C1 | Array<number>> = new Vector();
 let result = vector.add("a");
 let result1 = vector.add(1);
 let b = [1, 2, 3];
 let result2 = vector.add(b);
-let c = {name : "Dylon", age : "13"};
+let c: C1 = {name : "Dylon", age : "13"};
 let result3 = vector.add(c);
 ```
 
@@ -98,7 +102,7 @@ insert(element: T, index: number): void
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<string | number | Object | Array<number>> = new Vector();
 vector.insert("A", 0);
 vector.insert(0, 1);
 vector.insert(true, 2);
@@ -127,7 +131,7 @@ has(element: T): boolean
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<string> = new Vector();
 let result = vector.has("squirrel");
 vector.add("squirrel");
 let result1 = vector.has("squirrel");
@@ -156,7 +160,7 @@ getIndexOf(element: T): number
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -190,7 +194,7 @@ getLastIndexOf(element: T): number
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -224,7 +228,7 @@ removeByIndex(index: number): T
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -256,7 +260,7 @@ remove(element: T): boolean
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -282,7 +286,7 @@ removeByRange(fromIndex: number, toIndex: number): void
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -317,14 +321,14 @@ callbackfn的参数说明：
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
 vector.add(4);
-vector.replaceAllElements((value) => {
-    // 用户操作逻辑根据实际场景进行添加。
-    return value;
+vector.replaceAllElements((value : number) : number => {
+  // 用户操作逻辑根据实际场景进行添加。
+  return value;
 });
 ```
 
@@ -355,15 +359,14 @@ callbackfn的参数说明：
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<string | number | Object | Array<number>> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
 vector.add(4);
-vector.forEach((value, index) => {
-    console.log("value:" + value, "index:" + index);
+vector.forEach((value : Vector<string | number | Object | Array<number>> , index : number) : void => {
+  console.log("value:" + value, "index:" + index);
 });
-
 ```
 
 ### sort
@@ -390,7 +393,7 @@ comparator的参数说明：
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -424,7 +427,7 @@ subVector(fromIndex: number, toIndex: number): Vector&lt;T&gt;
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -447,7 +450,7 @@ clear(): void
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -472,7 +475,7 @@ clone(): Vector&lt;T&gt;
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -497,7 +500,7 @@ getCapacity(): number
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -522,7 +525,7 @@ convertToArray(): Array&lt;T&gt;
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -547,7 +550,7 @@ isEmpty(): boolean
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -572,7 +575,7 @@ increaseCapacityTo(newCapacity: number): void
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -592,7 +595,7 @@ trimToCurrentLength(): void
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -617,7 +620,7 @@ toString(): string
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -656,7 +659,7 @@ getFirstElement(): T
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -681,7 +684,7 @@ getLastElement(): T
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -713,7 +716,7 @@ getLastIndexFrom(element: T, index: number): number
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -746,7 +749,7 @@ getIndexFrom(element: T, index: number): number
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -772,7 +775,7 @@ setLength(newSize: number): void
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
@@ -803,14 +806,14 @@ get(index: number): T
 
 **示例：**
 
-  ```ts
-  let vector = new Vector();
-  vector.add(2);
-  vector.add(4);
-  vector.add(5);
-  vector.add(4);
-  let result = vector.get(2);
-  ```
+```ts
+let vector : Vector<number> = new Vector();
+vector.add(2);
+vector.add(4);
+vector.add(5);
+vector.add(4);
+let result = vector.get(2);
+```
 ### set
 
 set(index: number, element: T): T
@@ -848,16 +851,16 @@ set(index: number, element: T): T
 **示例：**
 
 ```ts
-let vector = new Vector();
+let vector : Vector<number> = new Vector();
 vector.add(2);
 vector.add(4);
 vector.add(5);
 vector.add(4);
-
 // 使用方法一：
-for (let item of vector) { 
-  console.log("value:" + item); 
-} 
+let nums: Array<number> =  vector.convertToArray()
+for (let item of nums) {
+  console.log("value:" + item);
+}
 
 // 使用方法二：
 let iter = vector[Symbol.iterator]();