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📜  三元反应 - Javascript 代码示例

📅  最后修改于: 2022-03-11 15:04:03.439000             🧑  作者: Mango

代码示例2
function Mailbox(props) {
  const unreadMessages = props.unreadMessages;
  return (
    

      
Hello!

      {unreadMessages.length > 0 &&
        

          You have {unreadMessages.length} unread messages.
        

      }
    

  );
}