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<!DOCTYPE html> <html> <head> <title> Dialog With JavaScript </title> <style> dialog { width: 50%; } </style> </head> <body> <div> <dialog id="DialogboxExample"> <p> This is a dialog window. </p> <button id="hide">Close dialog text</button> </dialog> <button id="show">Show dialog text</button> <p><b>Note:</b> The dialog tag is not supported in Internet Explorer.</p> </div> <script type="text/JavaScript"> (function() { var dialog = document.getElementById('DialogboxExample'); document.getElementById('show').onclick = function() { dialog.show(); }; document.getElementById('hide').onclick = function() { dialog.close(); }; })(); </script> </body> </html>