The HTML <optgroup></optgroup> element is used to group together related <option> elements in a <select> list.


Attribute Value Description
label name Specifies a description for a group of options. This attribute is required for functionality.
disabled Boolean Specifies that an option group should be disabled.

HTML example:

      <optgroup label="Basic Colors">
         <option value="Red">Red</option>
         <option value="Blue">Blue</option>
         <option value="green">Green</option>
      <optgroup label="Other Colors">
         <option value="Crimson">Crimson</option>
         <option value="Lightblue">Lightblue</option>
         <option value="Limegreen">Limegreen</option>

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