函数定义组件.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <script src="./js/react.js"></script>
  <script src="./js/react-dom.js"></script>
  <script src="./js/browser.js"></script>
  <script type="text/babel">
    function Welcome(props) {
      return <h1>hello, {props.name}</h1>
    }
    const element = <Welcome name="Tom" />;
    ReactDOM.render(
      element,
      document.getElementById("div1")
    )
  </script>
</head>
<body>
  <div id="div1"></div>
</body>
</html>