WorkerGlobalScope: online event

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

The online event of the {{domxref("WorkerGlobalScope")}} fires when the device reconnects to the internet.

Syntax

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

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

ononline = (event) => { }

Event type

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

Example

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

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

The same snippet, but using addEventListener():

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

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

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