attribute is a <a href=#boolean-attribute>boolean attribute</a>. An
<code><a href=#the-option-element>option</a></code> element is <dfn id=concept-option-disabled title=concept-option-disabled>disabled</dfn> if its <code title=attr-option-disabled><a href=#attr-option-disabled>disabled</a></code> is present or if it is
a child of an <code><a href=#the-optgroup-element>optgroup</a></code> element whose <code title=attr-optgroup-disabled><a href=#attr-optgroup-disabled>disabled</a></code> attribute is
<code><a href=#the-option-element>option</a></code> element is <dfn id=concept-option-disabled title=concept-option-disabled>disabled</dfn> if its <code title=attr-option-disabled><a href=#attr-option-disabled>disabled</a></code> attribute is present or
if it is a child of an <code><a href=#the-optgroup-element>optgroup</a></code> element whose <code title=attr-optgroup-disabled><a href=#attr-optgroup-disabled>disabled</a></code> attribute is
present.</p>
<p>An <code><a href=#the-option-element>option</a></code> element that is <a href=#attr-option-disabled title=attr-option-disabled>disabled</a> must prevent any <code title=event-click>click</code> events that are <a href=#queue-a-task title="queue
a task">queued</a> on the <a href=#user-interaction-task-source>user interaction task
source</a> from being dispatched on the element.</p>
attribute provides a label for element. The <dfn id=concept-option-label title=concept-option-label>label</dfn> of an <code><a href=#the-option-element>option</a></code>
element is the value of the <code title=attr-option-label><a href=#attr-option-label>label</a></code> attribute, if there is one,
<p>A form control that is <a href=#concept-fe-disabled title=concept-fe-disabled>disabled</a> must prevent any <code title=event-click>click</code> events that are <a href=#queue-a-task title="queue
a task">queued</a> on the <a href=#user-interaction-task-source>user interaction task
source</a> from being dispatched on the element.</p>
<p><strong>Constraint validation:</strong> If an element is <a href=#concept-fe-disabled title=concept-fe-disabled>disabled</a>, it is <a href=#barred-from-constraint-validation>barred from