<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title> JavaScript Window Navigator Detect Online </title> </head> <body> <script> function checkConnectionStatus() { if(navigator.onLine) { alert("Application is online."); } else { alert("Application is offline."); } } </script> <button type="button" onclick="checkConnectionStatus();">Check Connection Status</button> </body> </html>
