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<!DOCTYPE html> <html> <body> <h2>JavaScript Prompt</h2> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { let text; let person = prompt("Please enter your name:", "Harry Potter"); if (person == null || person == "") { text = "User cancelled the prompt."; } else { text = "Hello " + person + "! How are you today?"; } document.getElementById("demo").innerHTML = text; } </script> </body> </html>
