JavaScript Program to display confirm box

Program

<!DOCTYPE html>
<html>
<body>

<p>Click the button to display a confirm box.</p> <button onclick="myFunction()">Display Confirm</button> <p id="demo"></p>

<script> function myFunction() { var x; if (confirm("Press a button!") == true) { x = "You pressed OK!"; } else { x = "You pressed Cancel!"; } document.getElementById("demo").innerHTML = x; } </script>

</body> </html>

Output

Click the button to display a confirm box.