no internet connection html code code example

Example 1: no internet connection html page

window.addEventListener("online", function() {
  alert("You are online now!");
});

window.addEventListener("offline", function() {
  alert("Oops! You are offline now!");
});

Example 2: no internet connection html page

if (navigator.onLine) {
  console.log("You are online");
} else {
  console.log("You are offline");
}