<script src="https://cdnjs.cloudflare.com/ajax/libs/react/17.0.2/umd/react.development.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.development.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.26.0/babel.min.js"></script>
<h3>React Js use the map() method to create a new array of doubled numbers Example</h3>
<script type="text/babel">
const numbers = [1, 2, 3, 4, 5];
const doubledNumbers = numbers.map((number) => { <p>Original numbers: {numbers.join(', ')}</p> <p>Doubled numbers: {doubledNumbers.join(', ')}</p> ReactDOM.render(<App />, document.getElementById('app'));