3.3 KiB

Raw Blame History

id	title	challengeType	videoUrl	forumTopicId	dashedName
587d7788367417b2b2512aa2	使用 nav 元素使屏幕阅读器更容易导航	0	https://scrimba.com/c/czVwWSv	301024	make-screen-reader-navigation-easier-with-the-nav-landmark

--description--

nav 也是一个具有语义化特性的 HTML5 标签，它可以使屏幕阅读器快速识别出页面中的导航信息。它用于呈现页面中的主导航链接。

对于在多个页面底部出现的站点链接，我们不需要使用 nav 标签。我们将会在下个挑战中学习 footer 标签的使用。

--instructions--

Camper Cat 在他的忍者训练页面顶端放置了多个导航链接，但这些链接都写在了 div 中。请将 div 标签更改为 nav 标签，以提升页面的可访问性。

--hints--

应存在一个 nav 标签。

assert($('nav').length == 1);

nav 标签应包含 ul 标签及其列表项。

assert($('nav').children('ul').length == 1);

不应存在 div 标签。

assert($('div').length == 0);

确保 nav 标签是闭合的。

assert(
  code.match(/<\/nav>/g) &&
    code.match(/<\/nav>/g).length === code.match(/<nav>/g).length
);

--seed--

--seed-contents--

<body>
  <header>
    <h1>Training with Camper Cat</h1>

    <div>
      <ul>
        <li><a href="#stealth">Stealth &amp; Agility</a></li>
        <li><a href="#combat">Combat</a></li>
        <li><a href="#weapons">Weapons</a></li>
      </ul>
    </div>

  </header>
  <main>
    <section id="stealth">
      <h2>Stealth &amp; Agility Training</h2>
      <article><h3>Climb foliage quickly using a minimum spanning tree approach</h3></article>
      <article><h3>No training is NP-complete without parkour</h3></article>
    </section>
    <section id="combat">
      <h2>Combat Training</h2>
      <article><h3>Dispatch multiple enemies with multithreaded tactics</h3></article>
      <article><h3>Goodbye world: 5 proven ways to knock out an opponent</h3></article>
    </section>
    <section id="weapons">
      <h2>Weapons Training</h2>
      <article><h3>Swords: the best tool to literally divide and conquer</h3></article>
      <article><h3>Breadth-first or depth-first in multi-weapon training?</h3></article>
    </section>
  </main>
</body>

--solutions--

<body>
  <header>
    <h1>Training with Camper Cat</h1>

    <nav>
      <ul>
        <li><a href="#stealth">Stealth &amp; Agility</a></li>
        <li><a href="#combat">Combat</a></li>
        <li><a href="#weapons">Weapons</a></li>
      </ul>
    </nav>

  </header>
  <main>
    <section id="stealth">
      <h2>Stealth &amp; Agility Training</h2>
      <article><h3>Climb foliage quickly using a minimum spanning tree approach</h3></article>
      <article><h3>No training is NP-complete without parkour</h3></article>
    </section>
    <section id="combat">
      <h2>Combat Training</h2>
      <article><h3>Dispatch multiple enemies with multithreaded tactics</h3></article>
      <article><h3>Goodbye world: 5 proven ways to knock out an opponent</h3></article>
    </section>
    <section id="weapons">
      <h2>Weapons Training</h2>
      <article><h3>Swords: the best tool to literally divide and conquer</h3></article>
      <article><h3>Breadth-first or depth-first in multi-weapon training?</h3></article>
    </section>
  </main>
</body>

3.3 KiB Raw Blame History