React篇(030)-什么是内联条件表达式?

    <h1>Hello!</h1>
    {
        messages.length > 0 && !isLogin ?
          <h2>
              You have {messages.length} unread messages.
          </h2>
          :
          <h2>
              You don't have unread messages.
          </h2>
    }

    {
        isLogin && <span>Your have been login!</span>
    }