Execute a JavaScript when the browser starts to work offline:
The onoffline attribute fires when the browser starts to work offline.
Tip: The onoffline attribute is the opposite of the ononline attribute.
The numbers in the table specify the first browser version that fully supports the event attribute.
Event Attribute | |||||
---|---|---|---|---|---|
onoffline | Not supported | Deprecated as of IE11 8.0 |
3.0 | Not supported | Not supported |
The onoffline attribute is new in HTML5.
Value | Description |
---|---|
script | The script to be run on onoffline |
Supported HTML tags: | <body> |
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HTML DOM reference: onoffline event