Intro Line -
Both controlled and uncontrolled components in React are used for creating forms and managing user input, but they handle form state differently.
3 Points Compared and Contrasted -
Form State Management:
Controlled Components: The form data is handled by the state within the component. Every state mutation has an associated handler function, making React the "source of truth."
Uncontrolled Components: The form data is handled by the DOM itself. They're more traditional HTML form inputs.
Data Retrieval:
Controlled Components: Value can be retrieved directly from the state of the component.
Uncontrolled Components: Value can be retrieved using refs to point directly to a DOM element.
Validation and Handling Updates:
Controlled Components: As the state is controlled within the component, it's easier to integrate form validation or display the entered values back to the user.
Uncontrolled Components: These components are generally used for infrequently changed data or where state management isn't beneficial.