From 46e3d5f4bcc54506fcb1d0f0c3a3c59fb00c20fc Mon Sep 17 00:00:00 2001
From: koronya <koronya@hanmail.net>
Date: Tue, 10 Feb 2026 04:26:41 +0900
Subject: [PATCH] [JS][7kyu] Playing with Sets : Intersection

---
 .../playing-with-sets-intersection/koronya.js | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 codewars/7kyu/playing-with-sets-intersection/koronya.js

diff --git a/codewars/7kyu/playing-with-sets-intersection/koronya.js b/codewars/7kyu/playing-with-sets-intersection/koronya.js
new file mode 100644
index 000000000..9e485c696
--- /dev/null
+++ b/codewars/7kyu/playing-with-sets-intersection/koronya.js
@@ -0,0 +1,19 @@
+// [JS][7kyu] Playing with Sets : Intersection
+// playing-with-sets-intersection
+// https://www.codewars.com/kata/5884d46015a70f6cd7000035/train/javascript
+
+const inter = (s1, s2) => {
+  const result = new Set()
+  s1.forEach((item) => {
+    if (s2.has(item)) {
+      result.add(item)
+    }
+  })
+  return result
+}
+
+// es2024
+const inter2 = (s1, s2) => s1.intersection(s2)
+
+inter(new Set([1, 2]), new Set([2, 3]))
+inter2(new Set([1, 2]), new Set([2, 3]))