ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
155 lines
3.6 KiB
Markdown
155 lines
3.6 KiB
Markdown
---
|
|
id: bad87fee1348bd9aedf08834
|
|
title: 创建一组单选按钮
|
|
challengeType: 0
|
|
videoUrl: 'https://scrimba.com/p/pVMPUv/cNWKvuR'
|
|
forumTopicId: 16822
|
|
dashedName: create-a-set-of-radio-buttons
|
|
---
|
|
|
|
# --description--
|
|
|
|
`radio buttons`（单选按钮）就好比单项选择题，正确答案只有一个。
|
|
|
|
单选按钮是 `input` 选择框的一种类型。
|
|
|
|
每一个单选按钮都应该嵌套在它自己的 `label`（标签）元素中。这样，我们相当于给 `input` 元素和包裹它的 `label` 元素建立起了对应关系。
|
|
|
|
所有关联的单选按钮应该拥有相同的 `name` 属性。
|
|
|
|
下面是一个单选按钮的例子：
|
|
|
|
```html
|
|
<label>
|
|
<input type="radio" name="indoor-outdoor">Indoor
|
|
</label>
|
|
```
|
|
|
|
使得 `input` 与 `label` 关联的最佳实践是在 `label` 元素上设置 `for` 属性，让其值与单选按钮的 `id` 属性值相同。
|
|
|
|
```html
|
|
<label for="indoor">
|
|
<input id="indoor" type="radio" name="indoor-outdoor">Indoor
|
|
</label>
|
|
```
|
|
|
|
# --instructions--
|
|
|
|
给表单添加两个单选按钮，一个叫 `indoor` 另一个叫 `outdoor`。并将单选按钮的 `name` 属性值设置为 `indoor-outdoor`。
|
|
|
|
# --hints--
|
|
|
|
页面上应存在两个单选按钮元素。
|
|
|
|
```js
|
|
assert($('input[type="radio"]').length > 1);
|
|
```
|
|
|
|
应设置单选按钮的 `name` 属性值为 `indoor-outdoor`。
|
|
|
|
```js
|
|
assert($('input[type="radio"]').filter("[name='indoor-outdoor']").length > 1);
|
|
```
|
|
|
|
每个单选按钮都应嵌套进它自己的 `label` 元素中。
|
|
|
|
```js
|
|
assert($('label > input[type="radio"]:only-child').length > 1);
|
|
```
|
|
|
|
每一个 `label` 元素都有结束标签。
|
|
|
|
```js
|
|
assert(
|
|
code.match(/<\/label>/g) &&
|
|
code.match(/<label/g) &&
|
|
code.match(/<\/label>/g).length === code.match(/<label/g).length
|
|
);
|
|
```
|
|
|
|
其中一个 `label` 元素的文本为 `indoor`。
|
|
|
|
```js
|
|
assert(
|
|
$('label')
|
|
.text()
|
|
.match(/indoor/gi)
|
|
);
|
|
```
|
|
|
|
其中一个 `label` 元素的文本为 `outdoor`。
|
|
|
|
```js
|
|
assert(
|
|
$('label')
|
|
.text()
|
|
.match(/outdoor/gi)
|
|
);
|
|
```
|
|
|
|
所有的单选按钮都应该包含在 `form` 表单中。
|
|
|
|
```js
|
|
assert($('label').parent().get(0).tagName.match('FORM'));
|
|
```
|
|
|
|
# --seed--
|
|
|
|
## --seed-contents--
|
|
|
|
```html
|
|
<h2>CatPhotoApp</h2>
|
|
<main>
|
|
<p>Click here to view more <a href="#">cat photos</a>.</p>
|
|
|
|
<a href="#"><img src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
|
|
|
|
<p>Things cats love:</p>
|
|
<ul>
|
|
<li>cat nip</li>
|
|
<li>laser pointers</li>
|
|
<li>lasagna</li>
|
|
</ul>
|
|
<p>Top 3 things cats hate:</p>
|
|
<ol>
|
|
<li>flea treatment</li>
|
|
<li>thunder</li>
|
|
<li>other cats</li>
|
|
</ol>
|
|
<form action="https://freecatphotoapp.com/submit-cat-photo">
|
|
<input type="text" placeholder="cat photo URL" required>
|
|
<button type="submit">Submit</button>
|
|
</form>
|
|
</main>
|
|
```
|
|
|
|
# --solutions--
|
|
|
|
```html
|
|
<h2>CatPhotoApp</h2>
|
|
<main>
|
|
<p>Click here to view more <a href="#">cat photos</a>.</p>
|
|
|
|
<a href="#"><img src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
|
|
|
|
<p>Things cats love:</p>
|
|
<ul>
|
|
<li>cat nip</li>
|
|
<li>laser pointers</li>
|
|
<li>lasagna</li>
|
|
</ul>
|
|
<p>Top 3 things cats hate:</p>
|
|
<ol>
|
|
<li>flea treatment</li>
|
|
<li>thunder</li>
|
|
<li>other cats</li>
|
|
</ol>
|
|
<form action="https://freecatphotoapp.com/submit-cat-photo">
|
|
<label for="indoor"><input id="indoor" type="radio" name="indoor-outdoor"> Indoor</label>
|
|
<label for="outdoor"><input id="outdoor" type="radio" name="indoor-outdoor"> Outdoor</label><br>
|
|
<input type="text" placeholder="cat photo URL" required>
|
|
<button type="submit">Submit</button>
|
|
</form>
|
|
</main>
|
|
```
|