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<html><body><p>Click the button to see if the browser is online.</p><button onclick="myFunction()">Try it</button><p id="demo"></p><script>function myFunction() { var x = "Is the browser online? " + navigator.onLine; document.getElementById("demo").innerHTML = x;}</script></body><!-- Mirrored from www.w3schools.com/howto/tryit.asp?filename=tryhow_js_offline_detection by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 16:51:10 GMT --></html>