Internet status

setInterval(
  () => document.querySelector("#internetstatue").innerHTML = navigator.onLine? "online" : "offline", 
  1000
);
// or
window.addEventListener('online', (event) =>
  document.querySelector("#internetstatue").innerHTML = "online" 
);
window.addEventListener('offline', (event) =>
  document.querySelector("#internetstatue").innerHTML = "offline" 
);