onoffline Event
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onoffline Event
❮ DOM Events
❮ Event Object
Example
Execute a JavaScript when the browser starts to work offline:
<body onoffline="myFunction()">Try it Yourself »
Definition and Usage
The onoffline event occurs when the browser starts to work offline.
Tip: The onoffline event is the opposite of the
ononline
event.
Tip: You can also use the navigator.onLine property to find
out whether the browser is in online or offline mode.
Browser Support
The numbers in the table specify the first browser version that fully
supports the event.
| Event | |||||
|---|---|---|---|---|---|
| onoffline | Not supported | Deprecated as of IE11 8.0 | 3.0 | Not supported | Not supported |
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Syntax
In HTML:
<element onoffline="myScript">
Try it Yourself »
In JavaScript:
object.onoffline = function()myScript;
Try it Yourself »
In JavaScript, using the addEventListener() method:
object.addEventListener("offline", myScript);
Try it Yourself »
Note: The addEventListener() method is not supported in Internet Explorer 8 and earlier versions.
Technical Details
| Bubbles: | No |
|---|---|
| Cancelable: | No |
| Event type: | Event |
| Supported HTML tags: | <body> |
| DOM Version: | Level 3 Events |
❮ DOM Events
❮ Event Object
