Stateful components in React, also known as class components or container components, are those that manage their own state. In React, "state" refers to an object that determines how a component renders and behaves[1][3][5]. Stateful components are responsible for keeping track of changing data that affects the render output of the component.
These components can track changes, have knowledge of past, current, and potential future changes in themselves, and render their output accordingly[1]. They are typically used when you need to keep track of data that changes over time, such as form inputs, user authentication, or data fetching[3]. Stateful components are also great for handling user events, like button clicks or form submissions[3].
Stateful components are usually class components, but with the introduction of hooks in React, functional components can also maintain state[1]. This allows them to provide dynamic and interactive experiences without necessarily being class-based[1][5].
The state in these components is managed using the setState() function, which schedules updates to the component's state object and tells...
