Class component state that is persisted between redraws.
Updating this will not automatically trigger a redraw, unlike other frameworks.
This is different to Vnode state, which is always an instance of your class component.
This is undefined by default.
Get the class name to apply to the modal.
Get the content of the modal.
Get the title of the modal dialog.
The
Modalcomponent displays a modal dialog, wrapped in a form. Subclasses should implement theclassName,title, andcontentmethods.