offline

This is an event that fires when a Cordova application is offline (not connected to the Internet).

document.addEventListener("offline", yourCallbackFunction, false);

Details

When the application's network connection changes to being offline, the offline event is fired.

Typically, you will want to attach an event listener with document.addEventListener once you receive the Cordova 'deviceready' event.

Supported Platforms

  • Android
  • BlackBerry WebWorks (OS 5.0 and higher)
  • iOS
  • Windows Phone 7 and 8
  • Tizen
  • Windows 8

Quick Example

document.addEventListener("offline", onOffline, false);

function onOffline() {
    // Handle the offline event
}

Full Example

<!DOCTYPE html>
<html>
  <head>
    <title>Cordova Offline Example</title>

    <script type="text/javascript" charset="utf-8" src="cordova-2.4.0.js"></script>
    <script type="text/javascript" charset="utf-8">

    // Call onDeviceReady when Cordova is loaded.
    //
    // At this point, the document has loaded but cordova-2.4.0.js has not.
    // When Cordova is loaded and talking with the native device,
    // it will call the event `deviceready`.
    //
    function onLoad() {
        document.addEventListener("deviceready", onDeviceReady, false);
    }

    // Cordova is loaded and it is now safe to make calls Cordova methods
    //
    function onDeviceReady() {
	    document.addEventListener("offline", onOffline, false);
    }

    // Handle the offline event
    //
    function onOffline() {
    }

    </script>
  </head>
  <body onload="onLoad()">
  </body>
</html>

iOS Quirks

During initial startup, the first offline event (if applicable) will take at least a second to fire.

Windows Phone 7 Quirks

When running in the Emulator, the connection.status of the device is always unknown, and this event will NOT fire.

Windows Phone 8 Quirks

Emulator reports connection type as Cellular, and it will not change, so events will NOT fire.