源代码 ：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="UTF-8" /> <title>开源教程 React 实例</title> <script src="https://cdn.staticfile.org/react/16.4.0/umd/react.development.js"></script> <script src="https://cdn.staticfile.org/react-dom/16.4.0/umd/react-dom.development.js"></script> <script src="https://cdn.staticfile.org/babel-standalone/6.26.0/babel.min.js"></script> </head> <body> <div id="example"></div> <script type="text/babel"> class HelloMessage extends React.Component { render() { return ( <h1>Hello, {this.props.name}</h1> ); } } HelloMessage.defaultProps = { name: 'Runoob' }; const element = <HelloMessage/>; ReactDOM.render( element, document.getElementById('example') ); </script> </body> </html>
运行结果