creating other function with closure

Author: ashfaq

closureCallback.js

@@ -0,0 +1,18 @@
+function sayHiLater(){
+  var greeting = "Hi!";
+  setTimeout(function(){console.log(greeting)}, 2000)
+}
+sayHiLater()
+
+
+
+
+function tellMeWhenDone(callback){
+  var a = 100;
+  callback();
+}
+
+
+tellMeWhenDone(function(){console.log("I am Done")})
+
+tellMeWhenDone(function(){alert("I am Done")})

functionFactory.js

@@ -0,0 +1,17 @@
+function greet(language) {
+  return function (firstName, lastName) {
+    if (language === 'en') {
+      console.log(`Hello ${firstName} ${lastName}`)
+    }
+    if (language === 'es') {
+      console.log(`Hola ${firstName} ${lastName}`)
+    }
+  }
+}
+
+var englishGreeting = greet('en');
+var spanishGreeting = greet('es');
+// value of language will be available in the closure;
+
+englishGreeting('Charles', 'charli');
+spanishGreeting('pablo', 'paul');

index.html

@@ -6,6 +6,6 @@
         <meta charset="utf-8"/>
 
         <!-- <script src="collection.js"></script> -->
-        <script src="closures.js"></script>
+        <script src="closureCallback.js"></script>
     </body>
 </html>