Add scope examples in src/01-intro/05-scope.js

Author: loiane

src/01-intro/05-scope.js

@@ -0,0 +1,34 @@
+// Path: src/01-intro/05-scope.js
+
+let movie = 'Lord of the Rings'; // {1}
+
+function starWarsFan() {
+  const movie = 'Star Wars'; // {2}
+  return movie;
+}
+
+function marvelFan() {
+  movie = 'The Avengers'; // {3}
+  return movie;
+}
+
+function blizzardFan() {
+  const isFan = true;
+  let phrase = 'Warcraft'; // {4}
+  console.log('Before if: ' + phrase);
+  if (isFan) {
+    let phrase = 'initial text'; // {5}
+    phrase = 'For the Horde!'; // {6}
+    console.log('Inside if: ' + phrase);
+  }
+  phrase = 'For the Alliance!'; // {7}
+  console.log('After if: ' + phrase);
+}
+
+console.log(movie); // Lord of the Rings
+console.log(starWarsFan()); // Star Wars
+console.log(marvelFan()); // The Avengers
+console.log(movie); // The Avengers
+blizzardFan(); // Before if: Warcraft, Inside if: For the Horde!, After if: For the Alliance!
+
+// to see the output of this file use the command: node src/01-intro/05-scope.js