Arrow Function

<!DOCTYPE html>
<html>
<body>

<h2>JavaScript Function</h2>

<p>This example shows the syntax of a function, without the use of arrow function syntax.</p>

<p id="demo"></p>

<script>
var hello;

hello = function() {
  return "Hello World!";
}

document.getElementById("demo").innerHTML = hello();
</script>

</body>
</html>