You can edit / change the code and click run button
<!DOCTYPE html> <html> <body> <dialog id="window"> <h3>Sample Dialog!</h3> <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Earum, inventore!</p> <button id="exit">Close Dialog</button> </dialog> <button id="show">Show Dialog</button> <script type="text/javascript"> (function() { var dialog = document.getElementById('window'); document.getElementById('show').onclick = function() { dialog.show(); }; document.getElementById('exit').onclick = function() { dialog.close(); }; })(); </script> </body> </html>