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 6b0b5e57253e1ee8155081800b4d3ac302d9c2ff..2e18337e1251bd9d1ae1264d2c6e04391f62cb31 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-arraylist.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-arraylist.md
@@ -6,7 +6,7 @@
 ## 导入模块
 
 ```ts
-import ArrayList from '@ohos.util.ArrayList'
+import ArrayList from '@ohos.util.ArrayList';
 ```
 
 ## 系统能力
@@ -332,7 +332,7 @@ arrayList.add(4);
 arrayList.add(5);
 arrayList.add(4);
 arrayList.forEach((value, index) => {
-  console.log(value, index);
+  console.log("value:" + value, index);
 });
 ```
 
@@ -363,8 +363,8 @@ arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
 arrayList.add(4);
-arrayList.sort(a, (b => a - b));
-arrayList.sort(a, (b => b - a));
+arrayList.sort((a, b) => a - b);
+arrayList.sort((a, b) => b - a);
 arrayList.sort();
 ```
 
@@ -574,14 +574,14 @@ arrayList.add(4);
 
 // 使用方法一：
 for (let item of arrayList) { 
-  console.log(item); 
+  console.log("value:" + item); 
 } 
 
 // 使用方法二：
 let iter = arrayList[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
\ 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 724c8ec6cc4b4643960521486b1d1c0890c217e2..1ad1b76474eb679fa8ef45530d6c5c033e3bb9c0 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-deque.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-deque.md
@@ -7,7 +7,7 @@
 ## 导入模块
 
 ```ts
-import Deque from '@ohos.util.Deque'  
+import Deque from '@ohos.util.Deque'; 
 ```
 
 ## 系统能力
@@ -188,7 +188,7 @@ deque.insertEnd(4);
 deque.insertFront(5);
 deque.insertEnd(4);
 deque.forEach((value, index) => {
-  console.log(value, index);
+  console.log("value:" + value, index);
 });
 ```
 
@@ -261,14 +261,14 @@ deque.insertFront(4);
 
 // 使用方法一：
 for (let item of deque) { 
-  console.log(item); 
+  console.log("value:" + item); 
 }
 
 // 使用方法二：
 let iter = deque[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
\ No newline at end of file
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 6c7a0d6d94653c90232f80c9fa2ba9a156ae6d99..cfb107c2fc7fbb901fa0525e85925aec4eb92fbf 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-hashmap.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-hashmap.md
@@ -7,7 +7,7 @@
 ## 导入模块
 
 ```ts
-import HashMap from '@ohos.util.HashMap'  
+import HashMap from '@ohos.util.HashMap'; 
 ```
 
 ## 系统能力
@@ -256,7 +256,7 @@ 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;
 }
 ```
@@ -283,7 +283,7 @@ 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;
 }
 ```
@@ -344,7 +344,7 @@ 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);
 });
 ```
 
@@ -370,8 +370,8 @@ 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;
 }
 ```
@@ -397,16 +397,16 @@ hashMap.set("sdfs", 356);
 
 // 使用方法一：
 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]);
 }
 
 // 使用方法二：
 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;
 }
 ```
\ No newline at end of file
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 10023c1ac54fd3196be46c37dcdc652c3e214a09..29d056156d11aad27b903572fa21d832251a2c42 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-hashset.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-hashset.md
@@ -176,7 +176,7 @@ 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;
 } 
 ```
@@ -209,7 +209,7 @@ let hashSet = new HashSet();
 hashSet.add("sdfs");
 hashSet.add("Ahfbrgrbgnutfodgorrogorgrogofdfdf");
 hashSet.forEach((value, key) => {
-  console.log(value, key);
+  console.log("value:" + value, key);
 });
 ```
 
@@ -234,8 +234,8 @@ 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;
 }
 ```
@@ -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;
 }
 ```
\ 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 f639a9ed5bdd4c9e4897cdb1d40db71f576414ec..aa960436b5d1ba9e9843910123725a5f6184187e 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-lightweightmap.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-lightweightmap.md
@@ -7,7 +7,7 @@
 ## 导入模块
 
 ```ts
-import LightWeightMap from '@ohos.util.LightWeightMap'  
+import LightWeightMap from '@ohos.util.LightWeightMap';  
 ```
 
 ## 系统能力
@@ -475,7 +475,7 @@ 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;
 }
 ```
@@ -502,7 +502,7 @@ 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;
 } 
 ```
@@ -535,7 +535,7 @@ 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);
 });
 ```
 
@@ -561,8 +561,8 @@ 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;
 }
 ```
@@ -609,16 +609,16 @@ lightWeightMap.set("sdfs", 356);
 
 // 使用方法一：
 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]);
 }
 
 // 使用方法二：
 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;
 }
 ```
\ 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 9cb7ec6a0da176d91a3178c535d623f461ec8e7b..99d37c6bcb6a007e50fd1afccb575a3cf26894bf 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-lightweightset.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-lightweightset.md
@@ -7,7 +7,7 @@
 ## 导入模块
 
 ```ts
-import LightWeightSet from '@ohos.util.LightWeightSet'  
+import LightWeightSet from '@ohos.util.LightWeightSet';  
 ```
 
 ## 系统能力
@@ -439,7 +439,7 @@ let lightWeightSet = new LightWeightSet();
 lightWeightSet.add("sdfs");
 lightWeightSet.add("dfsghsf");
 lightWeightSet.forEach((value, key) => {
-  console.log(value, key);
+  console.log("value:" + value, key);
 });
 ```
 
@@ -492,14 +492,14 @@ lightWeightSet.add("sdfs");
 
 // 使用方法一：
 for (let item of lightWeightSet) { 
-  console.log("value: " + item);
+  console.log("value:" + item);
 }
 
 // 使用方法二：
 let iter = lightWeightSet[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
\ No newline at end of file
diff --git a/zh-cn/application-dev/reference/apis/js-apis-linkedlist.md b/zh-cn/application-dev/reference/apis/js-apis-linkedlist.md
index e4370ee75c238d0b1780859c635ee96b47bb4c33..b6be34281adf99b9c29740765f6a05863a772565 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-linkedlist.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-linkedlist.md
@@ -7,7 +7,7 @@
 ## 导入模块
 
 ```ts
-import LinkedList from '@ohos.util.LinkedList'  
+import LinkedList from '@ohos.util.LinkedList';  
 ```
 
 ## 系统能力
@@ -457,7 +457,7 @@ linkedList.add(4);
 linkedList.add(5);
 linkedList.add(4);
 linkedList.forEach((value, index) => {
-  console.log(value, index);
+  console.log("value:" + value, index);
 });
 ```
 
@@ -600,14 +600,14 @@ linkedList.add(4);
 
 // 使用方法一：
 for (let item of linkedList) { 
-  console.log(item); 
+  console.log("value:" + item); 
 } 
 
 // 使用方法二：
 let iter = linkedList[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
\ No newline at end of file
diff --git a/zh-cn/application-dev/reference/apis/js-apis-list.md b/zh-cn/application-dev/reference/apis/js-apis-list.md
index 5eb877e343cc1034bf624c7a547c3043001c8edc..72ded213885467aee03a261e71a7f3f6682200d0 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-list.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-list.md
@@ -7,7 +7,7 @@
 ## 导入模块
 
 ```ts
-import List from '@ohos.util.List'  
+import List from '@ohos.util.List';  
 ```
 
 ## 系统能力
@@ -378,7 +378,7 @@ list.add(4);
 list.add(5);
 list.add(4);
 list.forEach((value, index) => {
-  console.log(value, index);
+  console.log("value: " + value, index);
 });
 
 ```
@@ -410,8 +410,8 @@ list.add(2);
 list.add(4);
 list.add(5);
 list.add(4);
-list.sort(a, (b => a - b));
-list.sort(a, (b => b - a));
+list.sort((a, b) => a - b);
+list.sort((a, b) => b - a);
 ```
 
 ### getSubList
@@ -610,14 +610,14 @@ list.add(4);
 
 // 使用方法一：
 for (let item of list) { 
-  console.log(item); 
+  console.log("value: " + item); 
 }
 
 // 使用方法二：
 let iter = list[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value: " + temp);
   temp = iter.next().value;
 }
 ```
\ No newline at end of file
diff --git a/zh-cn/application-dev/reference/apis/js-apis-plainarray.md b/zh-cn/application-dev/reference/apis/js-apis-plainarray.md
index 832956e528b2ddf04bed5482ac6c05e8abf2dce5..353c68b0bd4d3b2a8a936af39aa88c5b421559c4 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-plainarray.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-plainarray.md
@@ -7,7 +7,7 @@
 ## 导入模块
 
 ```ts
-import PlainArray from '@ohos.util.PlainArray'  
+import PlainArray from '@ohos.util.PlainArray';  
 ```
 
 ## 系统能力
@@ -440,8 +440,8 @@ callbackfn的参数说明：
 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);
 });
 ```
 
@@ -467,16 +467,16 @@ plainArray.add(2, "sffdfhf");
 
 // 使用方法一：
 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]);
 }
 
 // 使用方法二：
 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;
 }
 ```
\ 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 a617929286022fd4ef3b3d3afe0555d5f24ac4fe..86edd7a79ebf1ef3b8c6570d90c79182aea072df 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-queue.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-queue.md
@@ -7,7 +7,7 @@
 ## 导入模块
 
 ```ts
-import Queue from '@ohos.util.Queue'  
+import Queue from '@ohos.util.Queue';  
 ```
 
 ## 系统能力
@@ -147,7 +147,7 @@ queue.add(4);
 queue.add(5);
 queue.add(4);
 queue.forEach((value, index) => {
-  console.log(value, index);
+  console.log("value:" + value, index);
 });
 
 ```
@@ -175,14 +175,14 @@ queue.add(4);
 
 // 使用方法一：
 for (let item of queue) { 
-  console.log(item); 
+  console.log("value:" + item); 
 }
 
 // 使用方法二：
 let iter = queue[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
\ No newline at end of file
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 ff5fd3f8bd1f4f78acad3e54535c8f0ddb71f7c2..de2efb76dd8a16884c675e46403f3a81aa6677ff 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-stack.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-stack.md
@@ -7,7 +7,7 @@
 ## 导入模块
 
 ```ts
-import Stack from '@ohos.util.Stack'  
+import Stack from '@ohos.util.Stack';  
 ```
 
 ## 系统能力
@@ -175,7 +175,7 @@ stack.push(4);
 stack.push(5);
 stack.push(4);
 stack.forEach((value, index) => {
- console.log(value, index);
+ console.log("value:" + value, index);
 });
 ```
 
@@ -225,14 +225,14 @@ stack.push(4);
 
 // 使用方法一：
 for (let item of stack) { 
-  console.log(item); 
+  console.log("value:" + item); 
 }
 
 // 使用方法二：
 let iter = stack[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
\ No newline at end of file
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 8646af2ff70b6dc40243d3cafea28bf9537e57f3..4ca6d30d62dfc9b5c151c30f55a640629b6b726c 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-treemap.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-treemap.md
@@ -7,7 +7,7 @@
 ## 导入模块
 
 ```ts
-import TreeMap from '@ohos.util.TreeMap'  
+import TreeMap from '@ohos.util.TreeMap';  
 ```
 
 ## 系统能力
@@ -391,7 +391,7 @@ 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;
 } 
 ```
@@ -418,7 +418,7 @@ 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;
 }
 ```
@@ -451,7 +451,7 @@ 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);
 });
 ```
 
@@ -477,8 +477,8 @@ 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;
 }
 ```
@@ -505,16 +505,16 @@ treeMap.set("sdfs", 356);
 
 // 使用方法一：
 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]);
 }
 
 // 使用方法二：
 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;
 }
 ```
\ No newline at end of file
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 6caf182b3ccec0011777b444b0b206775c435bae..9c0fc5270534ac2be8b7e35e3b62ff4df4864237 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-treeset.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-treeset.md
@@ -7,7 +7,7 @@
 ## 导入模块
 
 ```ts
-import TreeSet from '@ohos.util.TreeSet'  
+import TreeSet from '@ohos.util.TreeSet';  
 ```
 
 ## 系统能力
@@ -328,7 +328,7 @@ 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;
 } 
 ```
@@ -361,7 +361,7 @@ let treeSet = new TreeSet();
 treeSet.add("sdfs");
 treeSet.add("dfsghsf");
 treeSet.forEach((value, key) => {
-  console.log(value, key)
+  console.log("value:" + value, key)
 });
 ```
 
@@ -387,8 +387,8 @@ 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;
 }
 ```
@@ -416,14 +416,14 @@ treeSet.add("sdfs");
   
 // 使用方法一：
 for (let item of treeSet) { 
-  console.log("value: " + item);
+  console.log("value:" + item);
 }
 
 // 使用方法二：
 let iter = treeSet[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
\ No newline at end of file
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 fa7fd3018ebdcca74c2360e7580b3b555c1dd256..193b8576b663228587d935c4cb4171f53d9a051e 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-vector.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-vector.md
@@ -7,7 +7,7 @@
 ## 导入模块
 
 ```ts
-import Vector from '@ohos.util.Vector'  
+import Vector from '@ohos.util.Vector';  
 ```
 
 ## 系统能力
@@ -335,7 +335,7 @@ vector.add(4);
 vector.add(5);
 vector.add(4);
 vector.forEach((value, index) => {
-  console.log(value, index)
+  console.log("value:" + value, index)
 });
 
 ```
@@ -367,8 +367,8 @@ vector.add(2);
 vector.add(4);
 vector.add(5);
 vector.add(4);
-vector.sort(a, (b => a - b));
-vector.sort(a, (b => b - a));
+vector.sort((a, b) => a - b);
+vector.sort((a, b) => b - a);
 vector.sort();
 ```
 
@@ -815,14 +815,14 @@ vector.add(4);
 
 // 使用方法一：
 for (let item of vector) { 
-  console.log(item); 
+  console.log("value:" + item); 
 } 
 
 // 使用方法二：
 let iter = vector[Symbol.iterator]();
 let temp = iter.next().value;
 while(temp != undefined) {
-  console.log(temp);
+  console.log("value:" + temp);
   temp = iter.next().value;
 }
 ```
\ No newline at end of file