79 lines
2.1 KiB
Markdown
79 lines
2.1 KiB
Markdown
---
|
||
id: bad87fee1348bd9aedf08816
|
||
title: 用 a 实现网页间的跳转
|
||
challengeType: 0
|
||
videoUrl: 'https://scrimba.com/p/pVMPUv/c8EkncB'
|
||
forumTopicId: 18226
|
||
dashedName: link-to-external-pages-with-anchor-elements
|
||
---
|
||
|
||
# --description--
|
||
|
||
你可以用 `a`（Anchor，简写为 a）来实现网页间的跳转。
|
||
|
||
`a` 需要一个 `href` 属性指向跳转的目的地。 同时，它还应有内容。 例如：
|
||
|
||
```html
|
||
<a href="https://freecodecamp.org">this links to freecodecamp.org</a>
|
||
```
|
||
|
||
浏览器将显示文本 `this links to freecodecamp.org`，这是一个可点击的链接。 你可以通过这个链接访问 `https://www.freecodecamp.org`。
|
||
|
||
# --instructions--
|
||
|
||
创建一个内容文本为 “cat photos” 的 `a` 元素，链接指向 `https://freecatphotoapp.com`。
|
||
|
||
# --hints--
|
||
|
||
`a` 元素应有锚文本 `cat photos`。
|
||
|
||
```js
|
||
assert(/cat photos/gi.test($('a').text()));
|
||
```
|
||
|
||
你的 `a` 元素应链接到 `https://freecatphotoapp.com`
|
||
|
||
```js
|
||
assert(/^https?:\/\/freecatphotoapp\.com\/?$/i.test($('a').attr('href')));
|
||
```
|
||
|
||
确保 `a` 元素有结束标签。
|
||
|
||
```js
|
||
assert(
|
||
code.match(/<\/a>/g) &&
|
||
code.match(/<\/a>/g).length === code.match(/<a/g).length
|
||
);
|
||
```
|
||
|
||
# --seed--
|
||
|
||
## --seed-contents--
|
||
|
||
```html
|
||
<h2>CatPhotoApp</h2>
|
||
<main>
|
||
|
||
|
||
|
||
<img src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back.">
|
||
|
||
<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>
|
||
<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>
|
||
</main>
|
||
```
|
||
|
||
# --solutions--
|
||
|
||
```html
|
||
<h2>CatPhotoApp</h2>
|
||
<main>
|
||
|
||
<img src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back.">
|
||
|
||
<a href="https://freecatphotoapp.com">cat photos</a>
|
||
<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>
|
||
<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>
|
||
</main>
|
||
```
|