112 lines
3.1 KiB
Markdown
112 lines
3.1 KiB
Markdown
---
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id: 587d7787367417b2b2512aa1
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title: 使用 header 元素來讓屏幕閱讀器更容易進行導航
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challengeType: 0
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videoUrl: 'https://scrimba.com/c/cB76vtv'
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forumTopicId: 301023
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dashedName: make-screen-reader-navigation-easier-with-the-header-landmark
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---
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# --description--
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`header` 也是一個具有語義化的、可以提升頁面可訪問性的 HTML5 標籤。 它可以爲父級標籤呈現簡介信息或者導航鏈接，適用於那些在多個頁面頂部重複出現的內容。
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與 `main` 類似，`header` 的語義化特性也可以讓輔助工具快速定位到它的內容。
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**注意：**`header` 應當在 HTML 文檔的 `body` 標籤內使用。 它與包含頁面標題、元信息的 `head` 標籤不同。
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# --instructions--
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Camper Cat 正在創作一些訓練忍者的精彩文章，並打算爲這些文章創建一個新的頁面。 請把包含 `h1` 的 `div` 標籤替換爲 `header` 標籤。
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# --hints--
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應該存在一個 `header` 標籤。
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```js
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assert($('header').length == 1);
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```
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`header` 標籤中應包含 `h1`。
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```js
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assert($('header').children('h1').length == 1);
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```
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不應存在 `div` 標籤。
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```js
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assert($('div').length == 0);
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```
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確保 `header` 標籤是閉合的。
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```js
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assert(
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code.match(/<\/header>/g) &&
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code.match(/<\/header>/g).length === code.match(/<header>/g).length
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);
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```
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# --seed--
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## --seed-contents--
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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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# --solutions--
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```html
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<body>
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<header>
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<h1>Training with Camper Cat</h1>
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</header>
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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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