Class based component vs Functional components what is the difference ( Reactjs ) [duplicate]

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Class Components

  • Class-based Components uses ES6 class syntax. It can make use of the lifecycle methods.

  • As you can see in the example that u have given above Class components extend from React.Component.

  • In here you have to use this keyword to access the props and functions that you declare inside the class components.

Functional Components

  • Functional Components are simpler comparing to class-based functions.

  • Functional Components mainly focuses on the UI of the application, not on the behavior.

  • To be more precise these are basically render function in the class
    component.

  • Functional Components can’t have state (without hooks) and they can’t make
    use of lifecycle methods.

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