Added Callback.js

Author: khianvictorycalderon

Callback.js

@@ -0,0 +1,10 @@
+function greet(name) {
+    console.log(name);
+}
+
+function passGreet(name, callback) {
+    const myGreet = `Hello ${name}`;
+    callback(myGreet);
+}
+
+passGreet("John",greet);