React工作42:react中的jsx表达对象

const element = (
       <h1 className="greeting">
         Hello, world!
       </h1>
     );    const element = React.createElement(
       'h1',
       {className: 'greeting'},
       'Hello, world!'
     );    // 注意：这是简化过的结构
     const element = {
       type: 'h1',
       props: {
         className: 'greeting',
         children: 'Hello, world!'
       }
     };