onoffline Event
Example
Call a function when the browser starts to work offline:
<body onoffline="myFunction()">
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More examples below.
Description
The onoffline event occurs when the browser starts to work offline.
The onoffline event is the opposite of the
ononline event.
Note
You can also use the navigator.onLine property to find out if the browser offline.
Syntax
In JavaScript, using the addEventListener() method:
object.addEventListener("offline", myScript);
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Technical Details
| Bubbles: | No |
|---|---|
| Cancelable: | No |
| Event type: | Event |
| HTML tags: | <body> |
| DOM Version: | Level 3 Events |
Browser Support
onoffline is a DOM Level 3 (2004) feature.
It is fully supported in all modern browsers:
| Chrome | Edge | Firefox | Safari | Opera | IE |
| Yes | Yes | Yes | Yes | Yes | 11 |
