difference between functional component and class component

 

Functional Component:

Functional components are the simpler of the two and are mainly used for presentational purposes. They are just JavaScript functions that take props as an argument and return React elements.

Class Component:

Class components are used when you need to manage state, lifecycle methods, or use other features that functional components don't provide. They are defined using ES6 classes and extend the React.Component class.

difference between functional component and class component:

Functional Component	Class Component
Simple function-based syntax	Class-based syntax with extends React.Component
Stateless (before React 16.8 with Hooks)	Can manage state using this.state and lifecycle methods
No lifecycle methods (before React 16.8 with Hooks)	Has lifecycle methods like componentDidMount, render
No 'this' keyword	'this' is used to access properties and methods
No internal state management (before React 16.8 with Hooks)	Handles state using this.state and this.setState
Cannot use Hooks (before React 16.8)	Hooks can be used for state and lifecycle methods
Generally smaller and more concise	May be larger due to class definition and lifecycle methods
Easier for beginners	Steeper learning curve, especially for beginners
Increasingly used with Hooks and functional patterns	Still prevalent in existing codebases, but declining in new projects