react why use functional components code example

Example 1: functional component react

function Welcome(props) {
  return <h1>Hello, {props.name}</h1>;
}

function App() {
  return (
    <div>
      <Welcome name="Sara" />      <Welcome name="Cahal" />      <Welcome name="Edite" />    </div>
  );
}

ReactDOM.render(
  <App />,
  document.getElementById('root')
);

Example 2: create functional component react

import React from 'react'; const App = () => {  const greeting = 'Hello Function Component!';   return <Headline value={greeting} />;}; const Headline = ({ value }) =>  <h1>{value}</h1>; export default App;

Example 3: react functional component example

function Greeting(props) {
  
  return <h1> Hello, {props.name}! </h1>
  
}

Example 4: react functional component

function Welcome(props) {
  return <h1>Hello, {props.name}</h1>;
}