Offline Api

by techsin

HTML

<a href="https://www.google.com/">Click here</a>
<p>https://developer.mozilla.org/en-US/Apps/Build/Offline</p>
<p>http://diveintohtml5.info/offline.html</p>
<p>http://www.html5rocks.com/en/mobile/workingoffthegrid/#toc-detecting-network</p>

JavaScript

window.addEventListener("offline", function(e) {
  alert("offline");
}, false);

window.addEventListener("online", function(e) {
  alert("online");
}, false);