WorkerGlobalScope: offline event

{{APIRef("Web Workers API")}}{{AvailableInWorkers("worker")}}

The offline event of the {{domxref("WorkerGlobalScope")}} fires when the device loses connection to the internet.

Syntax

Use the event name in methods like {{domxref("EventTarget.addEventListener", "addEventListener()")}}, or set an event handler property.

addEventListener("offline", (event) => { })

onoffline = (event) => { }

Event type

A generic {{domxref("Event")}}.

Example

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

self.onoffline = () => {
  console.log("Your worker is now offline");
};

The same snippet, but using addEventListener():

self.addEventListener("offline", () => {
  console.log("Your worker is now offline");
});

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

The {{domxref("WorkerGlobalScope")}} interface it belongs to.