HTML | onoffline Event Attribute
The onoffline event attribute works when the browser work in offline mode. It is supported by <body> tag only. It is an opposite of ononline event attribute.
Supported Tags
- <body>
Syntax:
<element onoffline = "script">
Attribute Value: The script event is run when onoffline attribute is called.
Example:
HTML
<!DOCTYPE html> < html > < head > < title >onoffline event attribute</ title > < style > h1 { color:green; } body { text-align:center; } </ style > </ head > < body onoffline = "gfg()" > < h1 >GeeksforGeeks</ h1 > < h2 >onoffline Event Attribute</ h2 > < script > function gfg() { alert ("Browser working in offline mode"); } </ script > </ body > </ html > |
Output:
Supported Browsers: The browser supported by onoffline event attribute are listed below:
- Chrome 3
- Edge 12
- Firefox 9
- Internet Explorer 9
- Opera 15
- Safari 4
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