React Elements: Rendering an Element into the DOM 

const element = <h1>Hello, world</h1>;
ReactDOM.render(element, document.getElementById('root'));

To render a React element into a root DOM node, pass both to ReactDOM.render().

Related concepts

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Rendering an Element into the DOM

React Elements: Rendering an Element into the DOM — Structure map

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React Elements: Rendering an Element into the DOM — Related pages:

Rendering Elements