diff --git a/playground/2-arrow-function.js b/playground/2-arrow-function.js
new file mode 100644
index 0000000..e277d9c
--- /dev/null
+++ b/playground/2-arrow-function.js
@@ -0,0 +1,24 @@
+// const square = function(x) {
+//   return x * x;
+// }
+
+// const square = (x) => {
+//   return x * x;
+// }
+
+// const square = (x) => x * x;
+
+// console.log(square(2));
+
+const event = {
+  name: 'Birthday Party',
+  guestList: ['Andrew', 'Jen', 'Mike'],
+  printGuestList() {
+    console.log('Guest list for ' + this.name);
+    this.guestList.forEach((guest) => {
+      console.log(guest + ' is attending ' + this.name);
+    })
+  }
+}
+
+event.printGuestList();