Answers for "what is JSX"

what is jsx in react

instead of putting JavaScript into HTML,
JSX allows us to put HTML into JavaScript.
JSX stands for JavaScript XML. 
It is simply a syntax extension of React. 
It allows us to directly write HTML in React.

use jsx html

<script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>

component jsx

class ShoppingList extends React.Component {
  render() {
    return (
      <div className="shopping-list">
        <h1>Liste de courses pour {this.props.name}</h1>
        <ul>
          <li>Instagram</li>
          <li>WhatsApp</li>
          <li>Oculus</li>
        </ul>
      </div>
    );
  }
}

 // Exemple d’utilisation : <ShoppingList name="Marc" />

jsx react

const element = <h1>Hello World</h1>

javascript in jsx

const name = 'Josh Perez';
const element = <h1>Hello, {name}</h1>;
//notice the use of {...} to jump from jsx to javascript.
ReactDOM.render(
  element,
  document.getElementById('root')
);

jsx full form

Thr process of using HTML in react is known as JSX