What is the difference between Class and Const when creating UI in react-Native?

Question

const App = () => (
  <View>
    <Text>Test</Text>
  </View>
  )

class App extends Component {
  render() {
    return (
      <View>
        <Text>Test</Text>
      </View>
    );
  }
}

When I test, two things are the same. Please tell me the difference between these two.

Answer 1

A Class Component is a stateful component and const App is a stateless (or functional) component.

A stateful component is used to:

1. initialize the state
2. modify the state
3. render something

Additionally it has lifecycle methods.

Whereas a stateless component is often just used to return a piece of UI.

In short: a class component is more powerful than a functional component

EDIT:

Since React Native 0.59 also functional components can have a state. See Hooks-Intro for more information.