From 54731d1f042c52549e7ba307db83fdf2c34ff865 Mon Sep 17 00:00:00 2001
From: koronya <koronya@hanmail.net>
Date: Sat, 17 Jan 2026 23:47:53 +0900
Subject: [PATCH] [JS][8kyu] Sum of Multiples

---
 codewars/8kyu/sum-of-multiples/koronya.js | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 codewars/8kyu/sum-of-multiples/koronya.js

diff --git a/codewars/8kyu/sum-of-multiples/koronya.js b/codewars/8kyu/sum-of-multiples/koronya.js
new file mode 100644
index 000000000..08d7d9945
--- /dev/null
+++ b/codewars/8kyu/sum-of-multiples/koronya.js
@@ -0,0 +1,19 @@
+// [JS][8kyu] Sum of Multiples
+// sum-of-multiples
+// https://www.codewars.com/kata/57241e0f440cd279b5000829/train/javascript
+
+const sumMul = (n,m) => {
+  if (n >= m) {
+    return "INVALID"
+  }
+  let sum = 0
+  for (let i = n; i < m; i += n) {
+    sum += i
+  }
+  return sum
+}
+
+sumMul(0,0) === "INVALID"
+sumMul(2,9) === 20
+sumMul(4,-7) === "INVALID"
+