diff --git a/bangdori/238.js b/bangdori/238.js
new file mode 100644
index 0000000..7dda1b9
--- /dev/null
+++ b/bangdori/238.js
@@ -0,0 +1,20 @@
+/**
+ * @param {number[]} nums
+ * @return {number[]}
+ */
+var productExceptSelf = function (nums) {
+  const n = nums.length;
+  const products = Array(n).fill(1);
+
+  for (let i = 1; i < n; i++) {
+    products[i] = products[i - 1] * nums[i - 1];
+  }
+
+  let right = 1;
+  for (let i = n - 1; i >= 0; i--) {
+    products[i] *= right;
+    right *= nums[i];
+  }
+
+  return products;
+};