Why in console TypeError: React.DOM.render is not a function.?

Question

React

Why in console TypeError: React.DOM.render is not a function ?

<div id="area"></div>
    <script type="text/babel">
        React.DOM.render(
            <h1>Hello World</h1>,
            document.getElementById('area')
        );
    </script>

Answer 1

ReactDOM.render