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<!--> <!DOCTYPE> <a> <abbr> <acronym> <address> <applet> <area> <article> <aside> <audio> <b> <base> <basefont> <bdi> <bdo> <big> <blockquote> <body> <br> <button> <canvas> <caption> <center> <cite> <code> <col> <colgroup> <command> <datalist> <dd> <del> <details> <dfn> <dialog> <dir> <div> <dl> <dt> <em> <embed> <fieldset> <figcaption> <figure> <font> <footer> <form> <frame> <frameset> <head> <header> <hgroup> <h1> - <h6> <hr> <html> <i> <iframe> <img> <input> <ins> <kbd> <keygen> <label> <legend> <li> <link> <map> <mark> <menu> <meta> <meter> <nav> <noframes> <noscript> <object> <ol> <optgroup> <option> <output> <p> <param> <pre> <progress> <q> <rp> <rt> <ruby> <s> <samp> <script> <section> <select> <small> <source> <span> <strike> <strong> <style> <sub> <summary> <sup> <table> <tbody> <td> <textarea> <tfoot> <th> <thead> <time> <title> <tr> <track> <tt> <u> <ul> <var> <video> <wbr>HTML <optgroup> disabled Attribute
Example
A disabled option-group:
<select>
<optgroup label="German Cars" disabled>
<option value="mercedes">Mercedes</option>
<option value="audi">Audi</option>
</optgroup>
</select>
<optgroup label="German Cars" disabled>
<option value="mercedes">Mercedes</option>
<option value="audi">Audi</option>
</optgroup>
</select>
Try it yourself »
Browser Support
The disabled attribute is supported by all major browsers.
Note: The disabled attribute of the <optgroup> tag is not supported in Internet Explorer 7 and earlier versions.
Definition and Usage
The disabled attribute is a boolean attribute.
When present, it specifies that an option-group should be disabled.
A disabled option-group is unusable and un-clickable.
The disabled attribute can be set to keep a user from selecting the option-group until some other condition has been met (like selecting a checkbox, etc.). Then, a JavaScript is required to remove the disabled value, and make the option-group selectable.
Differences Between HTML 4.01 and HTML5
NONE.
Differences Between HTML and XHTML
In XHTML, attribute minimization is forbidden, and the disabled attribute must be defined as <optgroup disabled="disabled">.
Syntax
<optgroup disabled>
HTML <optgroup> tag
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