2018-10-10 22:03:03 +00:00
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---
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id: 587d7787367417b2b2512aa1
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title: Make Screen Reader Navigation Easier with the header Landmark
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challengeType: 0
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2020-02-11 09:06:41 +00:00
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videoUrl: 'https://scrimba.com/c/cB76vtv'
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forumTopicId: 301023
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localeTitle: 使用 header 元素使屏幕阅读器更容易导航
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2018-10-10 22:03:03 +00:00
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---
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## Description
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2020-02-11 09:06:41 +00:00
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<section id='description'>
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<code>header</code>也是一个具有语义化的、提升页面可访问性的 HTML5 标签。它可以为父级标签呈现简介信息或者导航链接，适用于那些在多个页面顶部重复出现的内容。
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与<code>main</code>类似，<code>header</code>的语义化特性也可以使辅助技术快速定位到它的内容。
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<strong>注意：</strong><br><code>header</code>用在 HTML 文档的<code>body</code>标签中。这点与包含页面标题、元信息的<code>head</code>标签不同。
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</section>
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2018-10-10 22:03:03 +00:00
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## Instructions
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2020-02-11 09:06:41 +00:00
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<section id='instructions'>
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Camper Cat 正在写一些训练忍者的精彩文章，并为它们建立一个新的页面。请使用<code>header</code>替换页面顶端包含<code>h1</code>的<code>div</code>标签。
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</section>
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2018-10-10 22:03:03 +00:00
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## Tests
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<section id='tests'>
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```yml
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tests:
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2020-02-11 09:06:41 +00:00
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- text: '你的代码应该包含 1 个<code>header</code>标签。'
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testString: assert($('header').length == 1);
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- text: '你的<code>header</code>标签应该包含<code>h1</code>。'
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testString: assert($('header').children('h1').length == 1);
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- text: '你的代码不应有任何<code>div</code>标签。'
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testString: assert($('div').length == 0);
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- text: '确保你的<code>header</code>标签是闭合的。'
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testString: assert(code.match(/<\/header>/g) && code.match(/<\/header>/g).length === code.match(/<header>/g).length);
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2018-10-10 22:03:03 +00:00
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='html-seed'>
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```html
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<body>
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<div>
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<h1>Training with Camper Cat</h1>
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</div>
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<main>
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<section id="stealth">
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<h2>Stealth & Agility Training</h2>
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<article><h3>Climb foliage quickly using a minimum spanning tree approach</h3></article>
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<article><h3>No training is NP-complete without parkour</h3></article>
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</section>
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<section id="combat">
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<h2>Combat Training</h2>
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<article><h3>Dispatch multiple enemies with multithreaded tactics</h3></article>
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<article><h3>Goodbye world: 5 proven ways to knock out an opponent</h3></article>
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</section>
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<section id="weapons">
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<h2>Weapons Training</h2>
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<article><h3>Swords: the best tool to literally divide and conquer</h3></article>
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<article><h3>Breadth-first or depth-first in multi-weapon training?</h3></article>
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</section>
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</main>
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</body>
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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2020-02-11 09:06:41 +00:00
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```html
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2018-10-10 22:03:03 +00:00
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// solution required
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```
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2020-02-11 09:06:41 +00:00
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2018-10-10 22:03:03 +00:00
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</section>
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2020-02-11 09:06:41 +00:00
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