164 lines
3.8 KiB
Markdown
164 lines
3.8 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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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="https://www.freecodecamp.org"> link to www.freecodecamp.org</a> for you to follow.
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</p>
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```
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让我们来拆解一下这个例子。 通常，文本是被包裹在 `p` 元素内：
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```html
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<p> Here's a ... for you to follow. </p>
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```
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接下来是*锚点*元素 `<a>`（它需要结束标签 `</a>`）：
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```html
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<a> ... </a>
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```
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`target` 是锚点元素的一个属性，它用来指定链接的打开方式。 属性值 `_blank` 表示链接会在新标签页打开。 `href` 是锚点元素的另一个属性，它用来指定链接的 URL：
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```html
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<a href="https://www.freecodecamp.org" target="_blank"> ... </a>
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```
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`a` 元素内的文本 `link to www.freecodecamp.org` 叫作<dfn>锚文本</dfn>，会显示为一个可以点击的链接：
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```html
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<a href=" ... " target="...">link to freecodecamp.org</a>
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```
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此示例的最终输出结果是这样：
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你可以访问 <a href="https://www.freecodecamp.org" target="_blank">link to www.freecodecamp.org</a>。
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# --instructions--
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创建一个新的段落 `p` 元素来包裹 `a` 元素。 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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应该只有一个 `a` 元素。
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```js
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assert(
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$('a').length === 1
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);
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```
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`a` 元素应该链接到 “`https://www.freecatphotoapp.com`”。
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```js
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assert(
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$('a[href="https://www.freecatphotoapp.com"]').length === 1
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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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$('a')
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.text()
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.match(/cat\sphotos/gi)
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);
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```
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应该创建一个新的 `p` 元素。 页面中应至少包含 3 个 `p` 标签。
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```js
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assert($('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://www.freecatphotoapp.com"]').parent().is('p')
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);
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```
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`p` 元素应该包含文本 `View more`（在它后面有一个空格）。
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```js
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assert(
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$('a[href="https://www.freecatphotoapp.com"]')
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.parent()
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.text()
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.match(/View\smore\s/gi)
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);
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```
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`a` 元素 <em>不</em> 应有文本 `View more`。
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```js
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assert(
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!$('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://www.freecatphotoapp.com" target="_blank">cat photos</a>
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<img src="https://www.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://www.freecatphotoapp.com">cat photos</a></p>
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<img src="https://www.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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