lovecoding
/
VIP20


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <script src="../react.development.js"></script>
    <script src="../react-dom.development.js"></script>
    <script src="../babel.min.js"></script>
  </head>
  <body>
    <div id="root"></div>
    <script type="text/babel">
      function Parent(props) {
        console.log('parent', props);
        return (
          <div
            className="parent"
            style={{ border: '1px solid red', padding: '10px' }}
          >
            <p>谁是爹》</p>
            <Child name="tom" age={18} />
          </div>
        );
      }

      function Child(props) {
        console.log('child', props);
        props.age = 19; // 报错
        return (
          <div
            style={{ border: '1px solid green', padding: '10px' }}
            className="parent"
          >
            这是儿子,它叫 {props.name}。今年 {props.age} 岁。
          </div>
        );
      }

      let element = <Parent />; // 将组件 => jsx(React元素)
      ReactDOM.createRoot(document.querySelector('#root')).render(element);
    </script>
  </body>
</html>