diff --git a/solution/1800-1899/1881.Maximum Value after Insertion/README.md b/solution/1800-1899/1881.Maximum Value after Insertion/README.md
index 365f766a27f68..88c820ecb0256 100644
--- a/solution/1800-1899/1881.Maximum Value after Insertion/README.md	
+++ b/solution/1800-1899/1881.Maximum Value after Insertion/README.md	
@@ -108,6 +108,29 @@ class Solution {
 }
 ```
 
+### **JavaScript**
+
+```js
+/**
+ * @param {string} n
+ * @param {number} x
+ * @return {string}
+ */
+ var maxValue = function(n, x) {
+    let nums = [...n];
+    let sign = 1, i = 0;
+    if (nums[0] == '-') {
+        sign = -1;
+        i++;
+    }
+    while (i < n.length && (nums[i] - x) * sign >= 0) {
+        i++;
+    }
+    nums.splice(i, 0, x);
+    return nums.join('');
+};
+```
+
 ### **...**
 
 ```
diff --git a/solution/1800-1899/1881.Maximum Value after Insertion/README_EN.md b/solution/1800-1899/1881.Maximum Value after Insertion/README_EN.md
index f5b29688f731a..1e5c8d66d4217 100644
--- a/solution/1800-1899/1881.Maximum Value after Insertion/README_EN.md	
+++ b/solution/1800-1899/1881.Maximum Value after Insertion/README_EN.md	
@@ -98,6 +98,29 @@ class Solution {
 }
 ```
 
+### **JavaScript**
+
+```js
+/**
+ * @param {string} n
+ * @param {number} x
+ * @return {string}
+ */
+ var maxValue = function(n, x) {
+    let nums = [...n];
+    let sign = 1, i = 0;
+    if (nums[0] == '-') {
+        sign = -1;
+        i++;
+    }
+    while (i < n.length && (nums[i] - x) * sign >= 0) {
+        i++;
+    }
+    nums.splice(i, 0, x);
+    return nums.join('');
+};
+```
+
 ### **...**
 
 ```
diff --git a/solution/1800-1899/1881.Maximum Value after Insertion/Solution.js b/solution/1800-1899/1881.Maximum Value after Insertion/Solution.js
new file mode 100644
index 0000000000000..d694261007d94
--- /dev/null
+++ b/solution/1800-1899/1881.Maximum Value after Insertion/Solution.js	
@@ -0,0 +1,18 @@
+/**
+ * @param {string} n
+ * @param {number} x
+ * @return {string}
+ */
+ var maxValue = function(n, x) {
+    let nums = [...n];
+    let sign = 1, i = 0;
+    if (nums[0] == '-') {
+        sign = -1;
+        i++;
+    }
+    while (i < n.length && (nums[i] - x) * sign >= 0) {
+        i++;
+    }
+    nums.splice(i, 0, x);
+    return nums.join('');
+};
\ No newline at end of file