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>JSX-数据渲染</title>
    <script src="../babel.min.js"></script>
    <script src="../react.development.js"></script>
    <script src="../react-dom.development.js"></script>
  </head>
  <body>
    <div id="root"></div>
    <script type="text/babel">
      // let username = 'guoguo';
      // 1、数据渲染 在React中可以使用 "{}" 去 在jsx中渲染数据
      // 在"{js表达式}"中，编写的是 JS表达式。类似与 Vue的插值语法"{{}}" 但是作用域不同
      // let element = <h3>Hello, {username}.</h3>;
      // <h3>Hello, daxia.</h3>

      // let element = <h3>Hello, {username + ' 大佬'}.</h3>;

      // let user = {
      //   firstName: '郭',
      //   lastName: '靖',
      // };
      // function formatUser(user) {
      //   return `${user.firstName} ${user.lastName}`;
      // }
      // let element = <h3>Hello, {formatUser(user)}.</h3>;

      let element = <h3>1 + 1 = {1 + 1}</h3>;

      const root = ReactDOM.createRoot(document.querySelector('#root'));
      root.render(element);
    </script>
  </body>
</html>