isRequired property
final
If non-null, whether the node should be considered required.
If true, user input is required on the semantics node before a form can be submitted. If false, the node is optional before a form can be submitted. If null, the node does not have a required semantics.
For example, a login form requires its email text field to be non-empty.
On web, this will set a aria-required attribute on the DOM element
that corresponds to the semantics node.
See also:
- SemanticsFlag.isRequired, for the flag this setting controls.
Implementation
final bool? isRequired;