Window: online event

The online event of the Window interface is fired when the browser has gained access to the network and the value of Navigator.onLine switches to true.

Note: This event shouldn't be used to determine the availability of a particular website. Network problems or firewalls might still prevent the website from being reached.

Bubbles No
Cancelable No
Interface Event
Event handler property ononline

Examples

// addEventListener version
window.addEventListener('online', (event) => {
    console.log("You are now connected to the network.");
});

// ononline version
window.ononline = (event) => {
  console.log("You are now connected to the network.");
};

Specifications

Specification
HTML Standard (HTML)
# event-online

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
online_event
Yes
12
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

See also

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https://developer.mozilla.org/en-US/docs/Web/API/Window/online_event