diff --git a/codes/cpp/include/TreeNode.hpp b/codes/cpp/include/TreeNode.hpp
index 614d799..7be2b8d 100644
--- a/codes/cpp/include/TreeNode.hpp
+++ b/codes/cpp/include/TreeNode.hpp
@@ -23,25 +23,28 @@ struct TreeNode {
  * @param list 
  * @return TreeNode* 
  */
-TreeNode* vecToTree(vector<int> list) {
-    TreeNode *root = new TreeNode(list[0]);
-    queue<TreeNode*> que;
-    que.emplace(root);
-    int i = 1;
-    while(!que.empty()) {
-        TreeNode *node = que.front();
+TreeNode *vecToTree(vector<int> list) {
+    if (list.empty()) {
+        return nullptr;
+    }
+
+    auto *root = new TreeNode(list[0]);
+    queue<TreeNode *> que;
+    size_t n = list.size(), index = 1;
+    while (index < n) {
+        auto node = que.front();
         que.pop();
-        if(list[i] != INT_MAX) {
-            node->left = new TreeNode(list[i]);
+
+        if (index < n) {
+            node->left = new TreeNode(list[index++]);
             que.emplace(node->left);
         }
-        i++;
-        if(list[i] != INT_MAX) {
-            node->right = new TreeNode(list[i]);
+        if (index < n) {
+            node->right = new TreeNode(list[index++]);
             que.emplace(node->right);
         }
-        i++;
     }
+
     return root;
 }
 
@@ -52,7 +55,7 @@ TreeNode* vecToTree(vector<int> list) {
  * @param val 
  * @return TreeNode* 
  */
-TreeNode* getTreeNode(TreeNode *root, int val) {
+TreeNode *getTreeNode(TreeNode *root, int val) {
     if (root == nullptr)
         return nullptr;
     if (root->val == val)
diff --git a/codes/javascript/chapter_sorting/bubble_sort.js b/codes/javascript/chapter_sorting/bubble_sort.js
new file mode 100644
index 0000000..270565c
--- /dev/null
+++ b/codes/javascript/chapter_sorting/bubble_sort.js
@@ -0,0 +1,49 @@
+/**
+ * File: quick_sort.js
+ * Created Time: 2022-12-01
+ * Author: IsChristina (christinaxia77@foxmail.com)
+ */
+
+/* 冒泡排序 */
+function bubbleSort(nums) {
+    // 外循环：待排序元素数量为 n-1, n-2, ..., 1
+    for (let i = nums.length - 1; i > 0; i--) {
+        // 内循环：冒泡操作
+        for (let j = 0; j < i; j++) {
+            if (nums[j] > nums[j + 1]) {
+            // 交换 nums[j] 与 nums[j + 1]
+            let tmp = nums[j];
+            nums[j] = nums[j + 1];
+            nums[j + 1] = tmp;
+            }
+        }
+    }
+}
+
+/* 冒泡排序（标志优化）*/
+function bubbleSortWithFlag(nums) {
+    // 外循环：待排序元素数量为 n-1, n-2, ..., 1
+    for (let i = nums.length - 1; i > 0; i--) {
+        let flag = false; // 初始化标志位
+        // 内循环：冒泡操作
+        for (let j = 0; j < i; j++) {
+            if (nums[j] > nums[j + 1]) {
+                // 交换 nums[j] 与 nums[j + 1]
+                let tmp = nums[j];
+                nums[j] = nums[j + 1];
+                nums[j + 1] = tmp;
+                flag = true;  // 记录交换元素
+            }
+        }
+        if (!flag) break;     // 此轮冒泡未交换任何元素，直接跳出
+    }
+}
+
+/* Driver Code */
+var nums = [4, 1, 3, 1, 5, 2]
+bubbleSort(nums)
+console.log("排序后数组 nums =", nums)
+
+var nums1 = [4, 1, 3, 1, 5, 2]
+bubbleSortWithFlag(nums1)
+console.log("排序后数组 nums =", nums1)
\ No newline at end of file
diff --git a/codes/javascript/chapter_sorting/insertion_sort.js b/codes/javascript/chapter_sorting/insertion_sort.js
new file mode 100644
index 0000000..2ba7155
--- /dev/null
+++ b/codes/javascript/chapter_sorting/insertion_sort.js
@@ -0,0 +1,24 @@
+/**
+ * File: quick_sort.js
+ * Created Time: 2022-12-01
+ * Author: IsChristina (christinaxia77@foxmail.com)
+ */
+
+/* 插入排序 */
+function insertionSort(nums) {
+    // 外循环：base = nums[1], nums[2], ..., nums[n-1]
+    for (let i = 1; i < nums.length; i++) {
+        let base = nums[i], j = i - 1;
+        // 内循环：将 base 插入到左边的正确位置
+        while (j >= 0 && nums[j] > base) {
+            nums[j + 1] = nums[j];  // 1. 将 nums[j] 向右移动一位
+            j--;
+        }
+        nums[j + 1] = base;         // 2. 将 base 赋值到正确位置
+    }
+}
+
+/* Driver Code */
+var nums = [4, 1, 3, 1, 5, 2]
+insertionSort(nums)
+console.log("排序后数组 nums = ", nums)
\ No newline at end of file
diff --git a/codes/javascript/chapter_sorting/merge_sort.js b/codes/javascript/chapter_sorting/merge_sort.js
new file mode 100644
index 0000000..635cc1d
--- /dev/null
+++ b/codes/javascript/chapter_sorting/merge_sort.js
@@ -0,0 +1,51 @@
+/**
+ * File: quick_sort.js
+ * Created Time: 2022-12-01
+ * Author: IsChristina (christinaxia77@foxmail.com)
+ */
+
+/**
+* 合并左子数组和右子数组
+* 左子数组区间 [left, mid]
+* 右子数组区间 [mid + 1, right]
+*/
+function merge(nums, left, mid, right) {
+    // 初始化辅助数组
+    let tmp = nums.slice(left, right + 1);   
+    // 左子数组的起始索引和结束索引  
+    let leftStart = left - left, leftEnd = mid - left;
+    // 右子数组的起始索引和结束索引       
+    let rightStart = mid + 1 - left, rightEnd = right - left;
+    // i, j 分别指向左子数组、右子数组的首元素
+    let i = leftStart, j = rightStart;                
+    // 通过覆盖原数组 nums 来合并左子数组和右子数组
+    for (let k = left; k <= right; k++) {
+        // 若 “左子数组已全部合并完”，则选取右子数组元素，并且 j++
+        if (i > leftEnd) {
+            nums[k] = tmp[j++];
+        // 否则，若 “右子数组已全部合并完” 或 “左子数组元素 < 右子数组元素”，则选取左子数组元素，并且 i++
+        } else if (j > rightEnd || tmp[i] <= tmp[j]) {
+            nums[k] = tmp[i++];
+        // 否则，若 “左子数组元素 > 右子数组元素”，则选取右子数组元素，并且 j++
+        } else {
+            nums[k] = tmp[j++];
+        }
+    }
+}
+
+/* 归并排序 */
+function mergeSort(nums, left, right) {
+    // 终止条件
+    if (left >= right) return;       // 当子数组长度为 1 时终止递归
+    // 划分阶段
+    let mid = Math.floor((left + right) / 2);    // 计算中点
+    mergeSort(nums, left, mid);      // 递归左子数组
+    mergeSort(nums, mid + 1, right); // 递归右子数组
+    // 合并阶段
+    merge(nums, left, mid, right);
+}
+
+/* Driver Code */
+var nums = [ 7, 3, 2, 6, 0, 1, 5, 4 ]
+mergeSort(nums, 0, nums.length - 1)
+console.log("归并排序完成后 nums =", nums)
\ No newline at end of file
diff --git a/codes/javascript/chapter_sorting/quick_sort.js b/codes/javascript/chapter_sorting/quick_sort.js
new file mode 100644
index 0000000..405bf76
--- /dev/null
+++ b/codes/javascript/chapter_sorting/quick_sort.js
@@ -0,0 +1,157 @@
+/**
+ * File: quick_sort.js
+ * Created Time: 2022-12-01
+ * Author: IsChristina (christinaxia77@foxmail.com)
+ */
+
+/* 快速排序类 */
+class QuickSort {
+    /* 元素交换 */
+    swap(nums, i, j) {
+        let tmp = nums[i]
+        nums[i] = nums[j]
+        nums[j] = tmp
+    }
+
+    /* 哨兵划分 */
+    partition(nums, left, right){
+        // 以 nums[left] 作为基准数
+        let i = left, j = right
+        while(i < j){
+            while(i < j && nums[j] >= nums[left]){
+                j -= 1  // 从右向左找首个小于基准数的元素
+            }
+            while(i < j && nums[i] <= nums[left]){
+                i += 1  // 从左向右找首个大于基准数的元素
+            }
+            // 元素交换
+            this.swap(nums, i, j) // 交换这两个元素
+        }
+        this.swap(nums, i, left)  // 将基准数交换至两子数组的分界线
+        return i  // 返回基准数的索引
+    }
+
+    /* 快速排序 */
+    quickSort(nums, left, right){
+        // 子数组长度为 1 时终止递归
+        if(left >= right) return
+        // 哨兵划分
+        const pivot = this.partition(nums, left, right)
+        // 递归左子数组、右子数组
+        this.quickSort(nums, left, pivot - 1)
+        this.quickSort(nums, pivot + 1, right)
+    }
+}
+
+/* 快速排序类（中位基准数优化） */
+class QuickSortMedian {
+    /* 元素交换 */
+    swap(nums, i, j) {
+        let tmp = nums[i]
+        nums[i] = nums[j]
+        nums[j] = tmp
+    }
+
+    /* 选取三个元素的中位数 */
+    medianThree(nums, left, mid, right) {
+        // 使用了异或操作来简化代码
+        // 异或规则为 0 ^ 0 = 1 ^ 1 = 0, 0 ^ 1 = 1 ^ 0 = 1
+        if ((nums[left] > nums[mid]) ^ (nums[left] > nums[right]))
+            return left;
+        else if ((nums[mid] < nums[left]) ^ (nums[mid] < nums[right]))
+            return mid;
+        else
+            return right;
+    }
+
+    /* 哨兵划分（三数取中值） */
+    partition(nums, left, right) {
+        // 选取三个候选元素的中位数
+        let med = this.medianThree(nums, left, Math.floor((left + right) / 2), right);
+        // 将中位数交换至数组最左端
+        this.swap(nums, left, med);
+        // 以 nums[left] 作为基准数
+        let i = left, j = right;
+        while (i < j) {
+            while (i < j && nums[j] >= nums[left])
+                j--;          // 从右向左找首个小于基准数的元素
+            while (i < j && nums[i] <= nums[left])
+                i++;          // 从左向右找首个大于基准数的元素
+            this.swap(nums, i, j); // 交换这两个元素
+        }
+        this.swap(nums, i, left);  // 将基准数交换至两子数组的分界线
+        return i;             // 返回基准数的索引
+    }
+
+    /* 快速排序 */
+    quickSort(nums, left, right) {
+        // 子数组长度为 1 时终止递归
+        if (left >= right) return;
+        // 哨兵划分
+        const pivot = this.partition(nums, left, right);
+        // 递归左子数组、右子数组
+        this.quickSort(nums, left, pivot - 1);
+        this.quickSort(nums, pivot + 1, right);
+    }
+}
+
+/* 快速排序类（尾递归优化） */
+class QuickSortTailCall {
+    /* 元素交换 */
+    swap(nums, i, j) {
+        let tmp = nums[i]
+        nums[i] = nums[j]
+        nums[j] = tmp
+    }
+
+    /* 哨兵划分 */
+    partition(nums, left, right) {
+        // 以 nums[left] 作为基准数
+        let i = left, j = right;
+        while (i < j) {
+            while (i < j && nums[j] >= nums[left])
+                j--;          // 从右向左找首个小于基准数的元素
+            while (i < j && nums[i] <= nums[left])
+                i++;          // 从左向右找首个大于基准数的元素
+            this.swap(nums, i, j); // 交换这两个元素
+        }
+        this.swap(nums, i, left);  // 将基准数交换至两子数组的分界线
+        return i; // 返回基准数的索引
+    }
+
+    /* 快速排序（尾递归优化） */
+    quickSort(nums, left, right) {
+        // 子数组长度为 1 时终止
+        while (left < right) {
+            // 哨兵划分操作
+            let pivot = this.partition(nums, left, right);
+            // 对两个子数组中较短的那个执行快排
+            if (pivot - left < right - pivot) {
+                this.quickSort(nums, left, pivot - 1);  // 递归排序左子数组
+                left = pivot + 1;  // 剩余待排序区间为 [pivot + 1, right]
+            } else {
+                this.quickSort(nums, pivot + 1, right); // 递归排序右子数组
+                right = pivot - 1; // 剩余待排序区间为 [left, pivot - 1]
+            }
+        }
+    }
+}
+
+/* Driver Code */
+/* 快速排序  */
+var nums = [4, 1, 3, 1, 5, 2]
+var quickSort = new QuickSort()
+quickSort.quickSort(nums, 0, nums.length - 1)
+console.log("快速排序完成后 nums =", nums)
+
+/* 快速排序（中位基准数优化） */
+nums1 = [4, 1, 3, 1, 5,2]
+var quickSortMedian = new QuickSort()
+quickSortMedian.quickSort(nums1, 0, nums1.length - 1)
+console.log("快速排序（中位基准数优化）完成后 nums =", nums1)
+
+/* 快速排序（尾递归优化） */
+nums2 = [4, 1, 3, 1, 5, 2]
+var quickSortTailCall = new QuickSort()
+quickSortTailCall.quickSort(nums2, 0, nums2.length - 1)
+console.log("快速排序（尾递归优化）完成后 nums =", nums2)
diff --git a/codes/python/chapter_stack_and_queue/array_queue.py b/codes/python/chapter_stack_and_queue/array_queue.py
index 7bc6a32..c4284d8 100644
--- a/codes/python/chapter_stack_and_queue/array_queue.py
+++ b/codes/python/chapter_stack_and_queue/array_queue.py
@@ -1,10 +1,110 @@
 '''
 File: array_queue.py
-Created Time: 2022-11-25
-Author: Krahets (krahets@163.com)
+Created Time: 2022-12-01
+Author: Peng Chen (pengchzn@gmail.com)
 '''
 
-import sys, os.path as osp
+import os.path as osp
+import sys
+
 sys.path.append(osp.dirname(osp.dirname(osp.abspath(__file__))))
 from include import *
 
+""" 基于环形数组实现的队列 """
+class ArrayQueue:
+    def __init__(self, size):
+        self.__nums = [None] * size  # 用于存储队列元素的数组
+        self.__front = 0  # 头指针，指向队首
+        self.__rear = 0  # 尾指针，指向队尾 + 1
+
+    """ 获取队列的容量 """
+    def capacity(self):
+        return len(self.__nums)
+
+    """ 获取队列的长度 """
+    def size(self):
+        # 由于将数组看作为环形，可能 rear < front ，因此需要取余数
+        return (self.capacity() + self.__rear - self.__front) % self.capacity()
+
+    """ 判断队列是否为空 """
+    def is_empty(self):
+        return (self.__rear - self.__front) == 0
+
+    """ 入队 """
+    def put(self, val):
+        if self.size() == self.capacity():
+            print("队列已满")
+            return False
+        # 尾结点后添加 num
+        self.__nums[self.__rear] = val
+        # 尾指针向后移动一位，越过尾部后返回到数组头部
+        self.__rear = (self.__rear + 1) % self.capacity()
+
+    """ 出队 """
+    def get(self):
+        # 删除头结点
+        if self.is_empty():
+            print("队列为空")
+            return False
+        num = self.__nums[self.__front]
+        # 队头指针向后移动，越过尾部后返回到数组头部
+        self.__front = (self.__front + 1) % self.capacity()
+        return num
+
+    """ 访问队首元素 """
+    def peek(self):
+        # 删除头结点
+        if self.is_empty():
+            print("队列为空")
+            return False
+        return self.__nums[self.__front]
+
+    """ 访问指定位置元素 """
+    def get_index(self, index):
+        if index >= self.size():
+            print("索引越界")
+            return False
+        return self.__nums[(self.__front + index) % self.capacity()]
+
+    """ 返回列表用于打印 """
+    def to_list(self):
+        res = [None] * self.size()
+        j = self.__front
+        for i in range(self.size()):
+            res[i] = self.__nums[(j % self.capacity())]
+            j += 1
+        return res
+
+
+if __name__ == "__main__":
+    """ 初始化队列 """
+    queue = ArrayQueue(10)
+
+    """ 元素入队 """
+    queue.put(1)
+    queue.put(3)
+    queue.put(2)
+    queue.put(5)
+    queue.put(4)
+    print("队列 queue = ", queue.to_list())
+
+    """ 访问队首元素 """
+    peek = queue.peek()
+    print("队首元素 peek = ", peek)
+
+    """ 访问索引 index 处元素 """
+    num = queue.get_index(3)
+    print("队列索引 3 处的元素为 num =", num)
+
+    """ 元素出队 """
+    get = queue.get()
+    print("出队元素 get = ", get)
+    print("出队后 queue = ", queue.to_list())
+
+    """ 获取队列的长度 """
+    size = queue.size()
+    print("队列长度 size = ", size)
+
+    """ 判断队列是否为空 """
+    is_empty = queue.is_empty()
+    print("队列是否为空 = ", is_empty)
diff --git a/codes/python/chapter_stack_and_queue/array_stack.py b/codes/python/chapter_stack_and_queue/array_stack.py
index b1640a0..23e4b4b 100644
--- a/codes/python/chapter_stack_and_queue/array_stack.py
+++ b/codes/python/chapter_stack_and_queue/array_stack.py
@@ -60,8 +60,8 @@ if __name__ == "__main__":
     print("栈顶元素 peek =", peek)
 
     """ 访问索引 index 处元素 """
-    num = stack.get(3);
-    print("栈索引 3 处的元素为 num =", num);
+    num = stack.get(3)
+    print("栈索引 3 处的元素为 num =", num)
 
     """ 元素出栈 """
     pop = stack.pop()
@@ -74,4 +74,4 @@ if __name__ == "__main__":
 
     """ 判断是否为空 """
     is_empty = stack.is_empty()
-    print("栈是否为空 =", is_empty)
\ No newline at end of file
+    print("栈是否为空 =", is_empty)
diff --git a/codes/python/chapter_stack_and_queue/deque.py b/codes/python/chapter_stack_and_queue/deque.py
index 9894975..a2929df 100644
--- a/codes/python/chapter_stack_and_queue/deque.py
+++ b/codes/python/chapter_stack_and_queue/deque.py
@@ -1,10 +1,47 @@
 '''
 File: deque.py
-Created Time: 2022-11-25
-Author: Krahets (krahets@163.com)
+Created Time: 2022-11-29
+Author: Peng Chen (pengchzn@gmail.com)
 '''
 
-import sys, os.path as osp
+import os.path as osp
+import sys
+
 sys.path.append(osp.dirname(osp.dirname(osp.abspath(__file__))))
 from include import *
 
+from collections import deque
+
+if __name__ == "__main__":
+    """ 初始化双向队列 """
+    duque = deque()
+
+    """ 元素入队 """
+    duque.append(2)  # 添加至队尾
+    duque.append(5)
+    duque.append(4)
+    duque.appendleft(3)  # 添加至队首
+    duque.appendleft(1)
+    print("双向队列 duque = ", duque)
+
+    """ 访问队首元素 """
+    peekFirst = duque[0]  # 队首元素
+    print("队首元素 peekFirst = ", peekFirst)
+    peekLast = duque[-1]  # 队尾元素
+    print("队尾元素 peekLast = ", peekLast)
+
+    """ 元素出队 """
+    popFirst = duque.pop()  # 队首元素出队
+    print("队首出队元素  popFirst= ", popFirst)
+    print("队首出队后 duque = ", duque)
+    popLast = duque.popleft()  # 队尾元素出队
+    print("队尾出队元素  popLast= ", popLast)
+    print("队尾出队后 duque = ", duque)
+
+    """ 获取双向队列的长度 """
+    size = len(duque)
+    print("双向队列长度 size = ", size)
+
+    """ 判断双向队列是否为空 """
+    is_empty = len(duque) == 0
+    print("双向队列是否为空 = ", is_empty)
diff --git a/codes/python/chapter_stack_and_queue/linkedlist_queue.py b/codes/python/chapter_stack_and_queue/linkedlist_queue.py
index 3606c8a..d5a2202 100644
--- a/codes/python/chapter_stack_and_queue/linkedlist_queue.py
+++ b/codes/python/chapter_stack_and_queue/linkedlist_queue.py
@@ -1,10 +1,94 @@
 '''
 File: linkedlist_queue.py
-Created Time: 2022-11-25
-Author: Krahets (krahets@163.com)
+Created Time: 2022-12-01
+Author: Peng Chen (pengchzn@gmail.com)
 '''
 
-import sys, os.path as osp
+import os.path as osp
+import sys
+
 sys.path.append(osp.dirname(osp.dirname(osp.abspath(__file__))))
 from include import *
 
+""" 基于链表实现的队列 """
+class LinkedListQueue:
+    def __init__(self):
+        self.__front = 0  # 头结点 front
+        self.__rear = 0  # 尾结点 rear
+        self.__size = 0
+
+    """ 获取队列的长度 """
+    def size(self):
+        return self.__size
+
+    """ 判断队列是否为空 """
+    def is_empty(self):
+        return not self.__front
+
+    """ 入队 """
+    def put(self, num):
+        # 尾结点后添加 num
+        node = ListNode(num)
+        # 如果队列为空，则令头、尾结点都指向该结点
+        if self.__front == 0:
+            self.__front = node
+            self.__rear = node
+        # 如果队列不为空，则将该结点添加到尾结点后
+        else:
+            self.__rear.next = node
+            self.__rear = node
+        self.__size += 1
+
+    """ 出队 """
+    def get(self):
+        num = self.peek()
+        # 删除头结点
+        self.__front = self.__front.next
+        self.__size -= 1
+        return num
+
+    """ 访问队首元素 """
+    def peek(self):
+        if self.size() == 0:
+            print("队列为空")
+            return False
+        return self.__front.val
+
+    """ 转化为列表用于打印 """
+    def to_list(self):
+        queue = []
+        temp = self.__front
+        while temp:
+            queue.append(temp.val)
+            temp = temp.next
+        return queue
+
+
+if __name__ == "__main__":
+    """ 初始化队列 """
+    queue = LinkedListQueue()
+
+    """ 元素入队 """
+    queue.put(1)
+    queue.put(3)
+    queue.put(2)
+    queue.put(5)
+    queue.put(4)
+    print("队列 queue = ", queue.to_list())
+
+    """ 访问队首元素 """
+    peek = queue.peek()
+    print("队首元素 front = ", peek)
+
+    """ 元素出队 """
+    get = queue.get()
+    print("出队元素 get = ", get)
+    print("出队后 queue = ", queue.to_list())
+
+    """ 获取队列的长度 """
+    size = queue.size()
+    print("队列长度 size = ", size)
+
+    """ 判断队列是否为空 """
+    is_empty = queue.is_empty()
+    print("队列是否为空 = ", is_empty)
diff --git a/codes/python/chapter_stack_and_queue/queue.py b/codes/python/chapter_stack_and_queue/queue.py
index 52855b2..3f39d2d 100644
--- a/codes/python/chapter_stack_and_queue/queue.py
+++ b/codes/python/chapter_stack_and_queue/queue.py
@@ -1,10 +1,42 @@
 '''
 File: queue.py
-Created Time: 2022-11-25
-Author: Krahets (krahets@163.com)
+Created Time: 2022-11-29
+Author: Peng Chen (pengchzn@gmail.com)
 '''
 
-import sys, os.path as osp
+import os.path as osp
+import sys
+
 sys.path.append(osp.dirname(osp.dirname(osp.abspath(__file__))))
 from include import *
 
+import queue
+
+if __name__ == "__main__":
+    """ 初始化队列 """
+    queue = queue.Queue()
+
+    """ 元素入队 """
+    queue.put(1)
+    queue.put(3)
+    queue.put(2)
+    queue.put(5)
+    queue.put(4)
+    print("队列 queue = ", queue.queue)
+
+    """ 访问队首元素 """
+    peek = queue.queue[0]
+    print("队首元素 peek = ", peek)
+
+    """ 元素出队 """
+    get = queue.get()
+    print("出队元素 get = ", get)
+    print("出队后 queue = ", queue.queue)
+
+    """ 获取队列的长度 """
+    size = queue.qsize()
+    print("队列长度 size = ", size)
+
+    """ 判断队列是否为空 """
+    is_empty = queue.empty()
+    print("队列是否为空 = ", is_empty)
diff --git a/docs/chapter_sorting/bubble_sort.md b/docs/chapter_sorting/bubble_sort.md
index 3f35ea1..fe1d071 100644
--- a/docs/chapter_sorting/bubble_sort.md
+++ b/docs/chapter_sorting/bubble_sort.md
@@ -73,6 +73,27 @@ comments: true
         }
     }
     ```
+
+=== "JavaScript"
+
+    ```js title="bubble_sort.js"
+    /* 冒泡排序 */
+    function bubbleSort(nums) {
+        // 外循环：待排序元素数量为 n-1, n-2, ..., 1
+        for (let i = nums.length - 1; i > 0; i--) {
+            // 内循环：冒泡操作
+            for (let j = 0; j < i; j++) {
+                if (nums[j] > nums[j + 1]) {
+                    // 交换 nums[j] 与 nums[j + 1]
+                    let tmp = nums[j];
+                    nums[j] = nums[j + 1];
+                    nums[j + 1] = tmp;
+                }
+            }
+        }
+    }
+    ```
+
 === "C++"
 
     ```cpp title="bubble_sort.cpp"
@@ -149,6 +170,29 @@ comments: true
     }
     ```
 
+=== "JavaScript"
+
+    ```js title="bubble_sort.js"
+    /* 冒泡排序（标志优化）*/
+    function bubbleSortWithFlag(nums) {
+        // 外循环：待排序元素数量为 n-1, n-2, ..., 1
+        for (let i = nums.length - 1; i > 0; i--) {
+            let flag = false; // 初始化标志位
+            // 内循环：冒泡操作
+            for (let j = 0; j < i; j++) {
+                if (nums[j] > nums[j + 1]) {
+                    // 交换 nums[j] 与 nums[j + 1]
+                    let tmp = nums[j];
+                    nums[j] = nums[j + 1];
+                    nums[j + 1] = tmp;
+                    flag = true;  // 记录交换元素
+                }
+            }
+            if (!flag) break;     // 此轮冒泡未交换任何元素，直接跳出
+        }
+    }
+    ```
+
 === "C++"
 
     ```cpp title="bubble_sort.cpp"
diff --git a/docs/chapter_sorting/insertion_sort.md b/docs/chapter_sorting/insertion_sort.md
index c9563fc..e220c2e 100644
--- a/docs/chapter_sorting/insertion_sort.md
+++ b/docs/chapter_sorting/insertion_sort.md
@@ -42,6 +42,24 @@ comments: true
     }
     ```
 
+=== "JavaScript"
+
+    ```js title="insertion_sort.js"
+    /* 插入排序 */
+    function insertionSort(nums) {
+        // 外循环：base = nums[1], nums[2], ..., nums[n-1]
+        for (let i = 1; i < nums.length; i++) {
+            let base = nums[i], j = i - 1;
+            // 内循环：将 base 插入到左边的正确位置
+            while (j >= 0 && nums[j] > base) {
+                nums[j + 1] = nums[j];  // 1. 将 nums[j] 向右移动一位
+                j--;
+            }
+            nums[j + 1] = base;         // 2. 将 base 赋值到正确位置
+        }
+    }
+    ```
+
 === "C++"
 
     ```cpp title="insertion_sort.cpp"
diff --git a/docs/chapter_sorting/merge_sort.md b/docs/chapter_sorting/merge_sort.md
index 00df177..58a48c2 100644
--- a/docs/chapter_sorting/merge_sort.md
+++ b/docs/chapter_sorting/merge_sort.md
@@ -103,6 +103,51 @@ comments: true
     }
     ```
 
+=== "JavaScript"
+
+    ```js title="merge_sort.js"
+    /**
+     * 合并左子数组和右子数组
+     * 左子数组区间 [left, mid]
+     * 右子数组区间 [mid + 1, right]
+     */
+    function merge(nums, left, mid, right) {
+        // 初始化辅助数组
+        let tmp = nums.slice(left, right + 1);   
+        // 左子数组的起始索引和结束索引  
+        let leftStart = left - left, leftEnd = mid - left;
+        // 右子数组的起始索引和结束索引       
+        let rightStart = mid + 1 - left, rightEnd = right - left;
+        // i, j 分别指向左子数组、右子数组的首元素
+        let i = leftStart, j = rightStart;                
+        // 通过覆盖原数组 nums 来合并左子数组和右子数组
+        for (let k = left; k <= right; k++) {
+            // 若 “左子数组已全部合并完”，则选取右子数组元素，并且 j++
+            if (i > leftEnd) {
+                nums[k] = tmp[j++];
+            // 否则，若 “右子数组已全部合并完” 或 “左子数组元素 < 右子数组元素”，则选取左子数组元素，并且 i++
+            } else if (j > rightEnd || tmp[i] <= tmp[j]) {
+                nums[k] = tmp[i++];
+            // 否则，若 “左子数组元素 > 右子数组元素”，则选取右子数组元素，并且 j++
+            } else {
+                nums[k] = tmp[j++];
+            }
+        }
+    }
+    
+    /* 归并排序 */
+    function mergeSort(nums, left, right) {
+        // 终止条件
+        if (left >= right) return;       // 当子数组长度为 1 时终止递归
+        // 划分阶段
+        let mid = Math.floor((left + right) / 2);    // 计算中点
+        mergeSort(nums, left, mid);      // 递归左子数组
+        mergeSort(nums, mid + 1, right); // 递归右子数组
+        // 合并阶段
+        merge(nums, left, mid, right);
+    }
+    ```
+
 === "C++"
 
     ```cpp title="merge_sort.cpp"
diff --git a/docs/chapter_sorting/quick_sort.md b/docs/chapter_sorting/quick_sort.md
index c9488f1..a0df18e 100644
--- a/docs/chapter_sorting/quick_sort.md
+++ b/docs/chapter_sorting/quick_sort.md
@@ -61,6 +61,35 @@ comments: true
     }
     ```
 
+=== "JavaScript"
+
+    ``` js title="quick_sort.js"
+    /* 元素交换 */
+    function swap(nums, i, j) {
+        let tmp = nums[i]
+        nums[i] = nums[j]
+        nums[j] = tmp
+    }
+    
+    /* 哨兵划分 */
+    function partition(nums, left, right){
+        // 以 nums[left] 作为基准数
+        let i = left, j = right
+        while(i < j){
+            while(i < j && nums[j] >= nums[left]){
+                j -= 1  // 从右向左找首个小于基准数的元素
+            }
+            while(i < j && nums[i] <= nums[left]){
+                i += 1  // 从左向右找首个大于基准数的元素
+            }
+            // 元素交换
+            swap(nums, i, j) // 交换这两个元素
+        }
+        swap(nums, i, left)  // 将基准数交换至两子数组的分界线
+        return i  // 返回基准数的索引
+    }
+    ```
+
 === "C++"
 
     ```cpp title="quick_sort.cpp"
@@ -138,6 +167,21 @@ comments: true
     }
     ```
 
+=== "JavaScript"
+
+    ```js title="quick_sort.js"
+    /* 快速排序 */
+    function quickSort(nums, left, right){
+        // 子数组长度为 1 时终止递归
+        if(left >= right) return
+        // 哨兵划分
+        const pivot = partition(nums, left, right)
+        // 递归左子数组、右子数组
+        quick_sort(nums, left, pivot - 1)
+        quick_sort(nums, pivot + 1, right)
+    }
+    ```
+
 === "C++"
 
     ```cpp title="quick_sort.cpp"
@@ -225,6 +269,32 @@ comments: true
     }
     ```
 
+=== "JavaScript"
+
+    ```js title="quick_sort.js"
+    /* 选取三个元素的中位数 */
+    function medianThree(nums, left, mid, right) {
+        // 使用了异或操作来简化代码
+        // 异或规则为 0 ^ 0 = 1 ^ 1 = 0, 0 ^ 1 = 1 ^ 0 = 1
+        if ((nums[left] > nums[mid]) ^ (nums[left] > nums[right]))
+            return left;
+        else if ((nums[mid] < nums[left]) ^ (nums[mid] < nums[right]))
+            return mid;
+        else
+            return right;
+    }
+    
+    /* 哨兵划分（三数取中值） */
+    function partition(nums, left, right) {
+        // 选取三个候选元素的中位数
+        let med = medianThree(nums, left, Math.floor((left + right) / 2), right);
+        // 将中位数交换至数组最左端
+        swap(nums, left, med);
+        // 以 nums[left] 作为基准数
+        // 下同省略...
+    }
+    ```
+
 === "C++"
 
     ```cpp title="quick_sort.cpp"
@@ -301,6 +371,27 @@ comments: true
     }
     ```
 
+=== "JavaScript"
+
+    ```js title="quick_sort.js"
+    /* 快速排序（尾递归优化） */
+    quickSort(nums, left, right) {
+        // 子数组长度为 1 时终止
+        while (left < right) {
+            // 哨兵划分操作
+            let pivot = partition(nums, left, right);
+            // 对两个子数组中较短的那个执行快排
+            if (pivot - left < right - pivot) {
+                quickSort(nums, left, pivot - 1);  // 递归排序左子数组
+                left = pivot + 1;  // 剩余待排序区间为 [pivot + 1, right]
+            } else {
+                quickSort(nums, pivot + 1, right); // 递归排序右子数组
+                right = pivot - 1; // 剩余待排序区间为 [left, pivot - 1]
+            }
+        }
+    }
+    ```
+
 === "C++"
 
     ```cpp title="quick_sort.cpp"