when to use functional components code example

Example 1: 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 2: react functional component example

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

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