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The onoffline property of the WorkerGlobalScope interface represents an EventHandler to be called when the offline event occurs and bubbles through the Worker.


self.onoffline = function() { ... };


The following code snippet shows an onoffline handler set inside a worker:

self.onoffline = function() {
  console.log('Your worker is now offline');


Specification Status Comment
WHATWG HTML Living Standard
The definition of 'WorkerGlobalScope.onoffline' in that specification.
Living Standard  

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 4 29 (29) (Yes) (Yes) (Yes)
Feature Android Chrome for Android Firefox Mobile (Gecko) Firefox OS (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? 40 29.0 (29) 1.4 ? ? ?

See also

The WorkerGlobalScope interface it belongs to.

Document Tags and Contributors

 Contributors to this page: fscholz, teoli, chrisdavidmills, kscarfone
 Last updated by: fscholz,