The offline
event of the Window
interface is fired when the browser has lost access to the network and the value of Navigator.onLine
switches to false
.
The offline
event of the Window
interface is fired when the browser has lost access to the network and the value of Navigator.onLine
switches to false
.
Use the event name in methods like addEventListener()
, or set an event handler property.
js
addEventListener("offline", (event) => {}); onoffline = (event) => {};
A generic Event
.
In addition to the Window
interface, the event handler property onoffline
is also available on the following targets:
js
// addEventListener version window.addEventListener("offline", (event) => { console.log("The network connection has been lost."); }); // onoffline version window.onoffline = (event) => { console.log("The network connection has been lost."); };
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
offline_event |
3 | 12 | 9 | 9 | 15 | 4 | ≤37 | 18 | 9 | 14 | 3 | 1.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/Window/offline_event