Module 1: Understanding Function Scope

app.js

@@ -1,5 +1,9 @@
-function sum(num1, num2) {
+function greeting() {
-    return num1 + num2;
+    let message = 'Hello';
+    let sayHi = function hi() {
+        let message = 'Hi';
+    };
+    sayHi();
+    console.log(message); // Hello as 'Hi' is out of scope
 }
-let result = sum(2,3);
+greeting();
-console.log(result);