intro_to_components.html

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>React Components</title>
    <script src="https://unpkg.com/react@16/umd/react.development.js"></script>
    <script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
    <script src="https://unpkg.com/babel-standalone@6.15.0/babel.min.js"></script>
</head>

<body>
    <div id="container"></div>
    <script type="text/babel">
        class HelloWorld extends React.Component {
            render(){
                return <p>Hello, {this.props.greetTarget}!</p>
            }
        }

        class Buttonify extends React.Component{
            render() {
                return (
                    <div>
                        <button type={this.props.behavior}>{this.props.children}</button>
                    </div>
                );
            }
        }

        ReactDOM.render(
            <div>
                <Buttonify behavior="submit">SEND DATA</Buttonify>
            </div>,
            document.querySelector("#container")
        );
    </script>
</body>
</html>