ReactDom
()import ReactDom from 'react-dom'
ReactDom.
render
()Рендерит react элемент в дом дерево
ReactDom.render(
React.createElement('h2', null, 'Hello World'),
document.getElementById('root')
);
// jsx
ReactDom.render(
<h2>Hello World</h2>,
document.getElementById('root')
)