training/demo3.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>React Array!</title>
    <script src="../build/react.js"></script>
    <script src="../build/react-dom.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.23/browser.min.js"></script>
  </head>
  <body>
    <div id="example"></div>
    <script type="text/babel">
		var NotesList = React.createClass({
			render: function() {
				return (
					<ol>
						{
							React.Children.map(this.props.children, function (child) {
								return <li>{child}</li>;
							})
						}
					</ol>
				);
			}
		});

		ReactDOM.render(
			<NotesList>
			 <span>hello</span>
			 <span>world</span>
			</NotesList>,
			document.body
		);
    </script>
  </body>
</html>