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								---
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								id: bad87fee1348bd9aedf08835
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											2020-12-16 00:37:30 -07:00
										 
									 
								 
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								title: 创建一组复选框
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											2018-10-10 18:03:03 -04:00
										 
									 
								 
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								challengeType: 0
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											2019-12-26 20:05:59 +08:00
										 
									 
								 
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								videoUrl: 'https://scrimba.com/p/pVMPUv/cqrkJsp'
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								forumTopicId: 16821
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											2021-01-13 03:31:00 +01:00
										 
									 
								 
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								dashedName: create-a-set-of-checkboxes
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								---
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								# --description--
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											2021-02-06 04:42:36 +00:00
										 
									 
								 
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								<dfn>checkboxes</dfn>(复选框)就好比多项选择题,正确答案有多个。
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											2021-01-08 11:20:48 -08:00
										 
									 
								 
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								复选框是 `input` 选择框的一种类型。
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											2021-02-06 04:42:36 +00:00
										 
									 
								 
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								每一个复选框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。
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											2020-12-16 00:37:30 -07:00
										 
									 
								 
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								所有关联的复选框应该拥有相同的 `name` 属性。
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								使得 `input` 与 `label` 关联的最佳实践是在 `label` 元素上设置 `for` 属性,让其值与相关联的 `input` 复选框的 `id` 属性值相同。
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											2020-12-16 00:37:30 -07:00
										 
									 
								 
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											2019-12-26 20:05:59 +08:00
										 
									 
								 
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								下面是一个复选框的例子:
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											2021-03-21 10:58:20 -06:00
										 
									 
								 
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								```html
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								<label for="loving"><input id="loving" type="checkbox" name="personality"> Loving</label>
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								```
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								# --instructions--
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											2021-03-21 10:58:20 -06:00
										 
									 
								 
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								请给表单添加三个复选框, 每个复选框都被嵌套进 `label` 元素中。 并且它们的 `name` 属性均为 `personality`。
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								# --hints--
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								表单中应存在三个复选框。
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								```js
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								assert($('input[type="checkbox"]').length > 2);
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								```
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								每个复选框都应该被嵌套进 `label` 元素中。
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								```js
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								assert($('label > input[type="checkbox"]:only-child').length > 2);
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								```
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								确保 `label` 元素有结束标签。
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											2019-12-26 20:05:59 +08:00
										 
									 
								 
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								```js
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								assert(
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								  code.match(/<\/label>/g) &&
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								    code.match(/<label/g) &&
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								    code.match(/<\/label>/g).length === code.match(/<label/g).length
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								);
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								```
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								复选框的 `name` 属性值均应为 `personality`。
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								```js
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								assert(
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								  $('label > input[type="checkbox"]').filter('[name="personality"]').length > 2
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								);
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								```
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								每个复选框都应该在 `form` 标签内。
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								```js
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								assert($('label').parent().get(0).tagName.match('FORM'));
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								```
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											2021-01-13 03:31:00 +01:00
										 
									 
								 
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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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								  <p>Click here to view more <a href="#">cat photos</a>.</p>
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											2021-09-22 08:34:59 -07:00
										 
									 
								 
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								  <a href="#"><img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
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											2021-01-13 03:31:00 +01:00
										 
									 
								 
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								  <p>Things cats love:</p>
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								  <ul>
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								    <li>cat nip</li>
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								    <li>laser pointers</li>
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								    <li>lasagna</li>
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								  </ul>
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								  <p>Top 3 things cats hate:</p>
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								  <ol>
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								    <li>flea treatment</li>
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								    <li>thunder</li>
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								    <li>other cats</li>
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								  </ol>
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											2021-04-28 00:16:44 +09:00
										 
									 
								 
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								  <form action="https://www.freecatphotoapp.com/submit-cat-photo">
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								    <label for="indoor"><input id="indoor" type="radio" name="indoor-outdoor"> Indoor</label>
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								    <label for="outdoor"><input id="outdoor" type="radio" name="indoor-outdoor"> Outdoor</label><br>
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								    <input type="text" placeholder="cat photo URL" required>
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								    <button type="submit">Submit</button>
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								  </form>
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								</main>
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								```
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											2020-12-16 00:37:30 -07:00
										 
									 
								 
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								# --solutions--
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											2018-10-10 18:03:03 -04:00
										 
									 
								 
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								```html
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								<h2>CatPhotoApp</h2>
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								<main>
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								  <p>Click here to view more <a href="#">cat photos</a>.</p>
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											2021-02-06 04:42:36 +00:00
										 
									 
								 
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											2021-09-22 08:34:59 -07:00
										 
									 
								 
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								  <a href="#"><img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
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											2021-02-06 04:42:36 +00:00
										 
									 
								 
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											2021-01-13 03:31:00 +01:00
										 
									 
								 
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								  <p>Things cats love:</p>
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								  <ul>
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								    <li>cat nip</li>
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								    <li>laser pointers</li>
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								    <li>lasagna</li>
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								  </ul>
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								  <p>Top 3 things cats hate:</p>
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								  <ol>
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								    <li>flea treatment</li>
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								    <li>thunder</li>
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								    <li>other cats</li>
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								  </ol>
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											2021-04-28 00:16:44 +09:00
										 
									 
								 
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								  <form action="https://www.freecatphotoapp.com/submit-cat-photo">
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											2021-01-13 03:31:00 +01:00
										 
									 
								 
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								    <label for="indoor"><input id="indoor" type="radio" name="indoor-outdoor"> Indoor</label>
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								    <label for="outdoor"><input id="outdoor" type="radio" name="indoor-outdoor"> Outdoor</label><br>
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								    <label for="playful"><input id="playful" type="checkbox" name="personality">Playful</label>
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								    <label for="lazy"><input id="lazy" type="checkbox" 
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								name="personality">Lazy</label>
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								    <label for="evil"><input id="evil" type="checkbox" 
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								name="personality">Evil</label><br>
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								    <input type="text" placeholder="cat photo URL" required>
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								    <button type="submit">Submit</button>
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								  </form>
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								</main>
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								```
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