<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title> JavaScript in Head Tag </title> </head> <body> <script> function myFunction() { document.getElementById("demo").innerHTML = "Paragraph changed."; } </script> </head> <body> <h1>A Web Page</h1> <p id="demo">A Paragraph</p> <button type="button" onclick="myFunction()">Try it</button> </body> </html>
