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<html><body><select size="6"> <option value="BMW">BMW</option> <option value="Mercedes">Mercedes</option> <optgroup id="myOptgroup" label="Swedish Cars" disabled> <option value="volvo">Volvo</option> <option value="saab">Saab</option> <option value="koenigsegg">Koenigsegg</option> </optgroup></select><p>Click the button to find out if a group of options in the drop-down list are disabled.</p><button onclick="myFunction()">Try it</button><p id="demo"></p><script>function myFunction() { var x = document.getElementById("myOptgroup").disabled; document.getElementById("demo").innerHTML = x;}</script></body><!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_optgroup_disabled by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 05 Sep 2022 15:53:10 GMT --></html>