1
<!DOCTYPE html>
2
<html lang="en">
3
    <head>
4
      <meta charset="UTF-8">
5
      <title>Built-in functions</title>
6
    </head>
7
    <body>
8
      <script>
9
       let name  = prompt("Enter Your Name!");
10
       alert("Hello! " + name);       
11
      </script>
12
    </body>
13
</html>