HTML <optgroup> disabled Attribute
The disabled attribute for <optgroup> element in HTML is used to specify that the option-group is disabled. A disabled optgroup is un-clickable and unusable. It is a boolean attribute.
<optgroup disabled>option value...</optgroup>
Supported Browsers: The browser supported by <optgroup> disabled attribute are listed below:
- Apple Safari
- Google Chrome 1.0
- Firefox 1.0
- Internet Explorer 8.0
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