143 lines
3.9 KiB
Markdown
143 lines
3.9 KiB
Markdown
---
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id: bad87fee1348bd9aede08817
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title: 将 a 嵌套在段落中
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challengeType: 0
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videoUrl: 'https://scrimba.com/p/pVMPUv/cb6k8Cb'
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forumTopicId: 18244
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dashedName: nest-an-anchor-element-within-a-paragraph
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---
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# --description--
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你可以在其他文本元素内嵌套链接。
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```html
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<p>
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Here's a <a target="_blank" href="http://freecodecamp.org"> link to freecodecamp.org</a> for you to follow.
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</p>
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```
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我们来分解一下这个示例：普通文本被包裹在 `p` 元素中，例如
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`<p> Here's a ... for you to follow. </p>` 然后是 *anchor* 元素 `<a>`（要求有一个结束标签 `</a>`）：
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`<a> ... </a>` `target` 是一个锚点标签属性，用来指定在哪里打开链接，`_blank` 值指定在一个新的窗口打开链接，`href` 是一个锚点标签属性，包含链接的 URL 地址
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`<a href="http://freecodecamp.org"> ... </a>`。`a` 元素中的文本，**“链接到 freecodecamp.org”**，叫作 `anchor text`，将显示一个可点击的链接：
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`<a href=" ... ">link to freecodecamp.org</a>`。 这个示例最后输出的结果像这样：
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你可以点击这个 [freecodecamp.org 链接](http://freecodecamp.one)。
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# --instructions--
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创建一个新的段落（`p`）标签来包裹 `main` 元素里的 `a` 节点。 新段落应有文本 `View more cat photos`，其中 `cat photos` 是一个链接，其余是纯文本。
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# --hints--
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应包含一个链接到 "`https://freecatphotoapp.com`" 的 `a` 元素。
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```js
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assert(
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$('a[href="https://freecatphotoapp.com"]').length > 0 ||
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$('a[href="http://www.freecatphotoapp.com"]').length > 0
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);
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```
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`a` 元素应有锚文本 `cat photos`。
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```js
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assert(
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$('a')
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.text()
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.match(/cat\sphotos/gi)
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);
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```
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你应该在 `a` 标签的外部创建一个新的 `p` 标签。 页面中应至少包含 3 个 `p` 标签。
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```js
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assert($('p') && $('p').length > 2);
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```
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`a` 应嵌套在新创建的 `p` 元素内。
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```js
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assert(
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$('a[href="https://freecatphotoapp.com"]').parent().is('p') ||
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$('a[href="http://www.freecatphotoapp.com"]').parent().is('p')
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);
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```
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`p` 元素应有文本 `View more`（后面有一个空格）。
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```js
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assert(
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$('a[href="https://freecatphotoapp.com"]')
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.parent()
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.text()
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.match(/View\smore\s/gi) ||
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$('a[href="http://www.freecatphotoapp.com"]')
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.parent()
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.text()
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.match(/View\smore\s/gi)
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);
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```
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`a` 元素 <em>不</em> 应有文本 `View more`。
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```js
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assert(
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!$('a')
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.text()
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.match(/View\smore/gi)
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);
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```
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确保每个 `p` 元素有结束标签。
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```js
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assert(
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code.match(/<\/p>/g) &&
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code.match(/<p/g) &&
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code.match(/<\/p>/g).length === code.match(/<p/g).length
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);
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```
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确保每个 `a` 元素有结束标签。
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```js
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assert(
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code.match(/<\/a>/g) &&
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code.match(/<a/g) &&
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code.match(/<\/a>/g).length === code.match(/<a/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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<h2>CatPhotoApp</h2>
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<main>
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<a href="https://freecatphotoapp.com" target="_blank">cat photos</a>
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<img src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back.">
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<p>Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.</p>
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<p>Purr jump eat the grass rip the couch scratched sunbathe, shed everywhere rip the couch sleep in the sink fluffy fur catnip scratched.</p>
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</main>
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```
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# --solutions--
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```html
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<h2>CatPhotoApp</h2>
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<main>
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<p>View more <a target="_blank" href="https://freecatphotoapp.com">cat photos</a></p>
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<img src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back.">
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<p>Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.</p>
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<p>Purr jump eat the grass rip the couch scratched sunbathe, shed everywhere rip the couch sleep in the sink fluffy fur catnip scratched.</p>
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</main>
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```
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