136 lines
3.7 KiB
Markdown
136 lines
3.7 KiB
Markdown
---
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id: bad87fee1348bd9aedf08835
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title: 創建一組複選框
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challengeType: 0
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videoUrl: 'https://scrimba.com/p/pVMPUv/cqrkJsp'
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forumTopicId: 16821
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dashedName: create-a-set-of-checkboxes
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---
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# --description--
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<dfn>checkboxes</dfn>（複選框）就好比多項選擇題，正確答案有多個。
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複選框是 `input` 選擇框的一種類型。
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每一個複選框都應該嵌套在它自己的 `label`（標籤）元素中。 這樣，我們相當於給 `input` 元素和包裹它的 `label` 元素建立起了對應關係。
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所有關聯的複選框應該擁有相同的 `name` 屬性。
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使得 `input` 與 `label` 關聯的最佳實踐是在 `label` 元素上設置 `for` 屬性，讓其值與相關聯的 `input` 複選框的 `id` 屬性值相同。
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下面是一個複選框的例子：
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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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請給表單添加三個複選框， 每個複選框都被嵌套進 `label` 元素中。 並且它們的 `name` 屬性均爲 `personality`。
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# --hints--
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表單中應存在三個複選框。
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```js
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assert($('input[type="checkbox"]').length > 2);
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```
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每個複選框都應該被嵌套進 `label` 元素中。
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```js
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assert($('label > input[type="checkbox"]:only-child').length > 2);
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```
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確保 `label` 元素有結束標籤。
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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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複選框的 `name` 屬性值均應爲 `personality`。
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```js
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assert(
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$('label > input[type="checkbox"]').filter('[name="personality"]').length > 2
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);
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```
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每個複選框都應該在 `form` 標籤內。
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```js
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assert($('label').parent().get(0).tagName.match('FORM'));
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```
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# --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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<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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<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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<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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# --solutions--
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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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<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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<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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<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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<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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