WorkerGlobalScope: online event

Note: This feature is only available in Web Workers.

The online event of the WorkerGlobalScope fires when the device reconnects to the internet.

Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

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

ononline = (event) => {};

Event type

A generic Event.

Example

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

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

The same snippet, but using addEventListener():

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

Specifications

Specification
HTML
# handler-workerglobalscope-ononline

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
online event

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
See implementation notes.

See also

The WorkerGlobalScope interface it belongs to.