Adding demo for data types

Author: aaronpowell

07-data-types/demo.js

@@ -0,0 +1,12 @@
+const people = ["Aaron", "Mel", "John"];
+const one = 1;
+const str = "Hello World";
+const b = true;
+const person = {
+  firstName: "Aaron",
+  lastName: "Powell",
+};
+
+function sayHello(person) {
+  console.log("Hello " + person.firstName);
+}

07-data-types/demo_solution.js

@@ -0,0 +1,29 @@
+const people = ["Aaron", "Mel", "John"];
+// const one = 1;
+const one = new Number(1);
+const str = "Hello World";
+const b = true;
+const person = {
+  firstName: "Aaron",
+  lastName: "Powell",
+};
+
+function sayHello(person) {
+  console.log("Hello " + person.firstName);
+}
+
+console.log("-- typeof --");
+console.log(typeof people);
+console.log(typeof one);
+console.log(typeof str);
+console.log(typeof b);
+console.log(typeof person);
+console.log(typeof sayHello);
+
+console.log("-- instanceof --");
+console.log(people instanceof Array);
+console.log(one instanceof Number);
+console.log(str instanceof String);
+console.log(b instanceof Boolean);
+console.log(person instanceof Object);
+console.log(sayHello instanceof Function);