reactintro/13.eventhandler.html at master · linyutg/reactintro · GitHub

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<!DOCTYPE html>
<html>
  <head>
    <title>event handler</title>
    <meta charset="utf-8" />
    <style>
      body {
        font-family: -apple-system, sans-serif;
      }
    </style>
  </head>
  <body>
    <div id="app1"></div>
    <div id="app2"></div>
    <script src="react/react.js"></script>
    <script src="react/react-dom.js"></script>
    <script src="react/babel.js"></script>
    <script type="text/babel"></script>
  </body>
  <script type="text/babel">
    function Button() {
      function handleClick() {
        alert("You clicked me!");
      }

      return <button onClick={handleClick}>Click me</button>;
    }

    function Button2({ onClick, children }) {
      return <button onClick={onClick}>{children}</button>;
    }

    function PlayButton({ movieName }) {
      function handlePlayClick() {
        alert(`Playing ${movieName}!`);
      }

      return <Button2 onClick={handlePlayClick}>Play "{movieName}"</Button2>;
    }

    ReactDOM.render(<Button />, document.getElementById("app1"));
    ReactDOM.render(<PlayButton movieName="The Matrix" />, document.getElementById("app2"));
  </script>
</html>