Functional Components: Functional components are just javascript functions in disguise. A javascript function can be used to construct a functional component in React.
Class Components: Class components are a little more difficult to understand than functional components.
Our app has five components, as you can see above. The data that each component represents has been italicised.
Components are the foundation of every React programme, and a typical React app will contain a large number of them. Simply described, a component is a JavaScript class or function that accepts properties(props) as input and returns a React element that explains how a piece of the UI (User Interface) should appear.
Components are frequently described as "simply functions," but we believe they must be more to be helpful. Components in React represent any composable functionality, such as rendering, lifecycle, and state.
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