2018-10-10 22:03:03 +00:00
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---
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id: bad87fee1348bd9aedd08830
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2020-12-16 07:37:30 +00:00
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title: 给表单添加提交按钮
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2018-10-10 22:03:03 +00:00
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challengeType: 0
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2019-12-26 12:05:59 +00:00
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videoUrl: 'https://scrimba.com/p/pVMPUv/cp2Nkhz'
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forumTopicId: 16627
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2021-01-13 02:31:00 +00:00
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dashedName: add-a-submit-button-to-a-form
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2018-10-10 22:03:03 +00:00
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---
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2020-12-16 07:37:30 +00:00
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# --description--
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2021-01-08 19:20:48 +00:00
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让我们来给表单添加一个 `submit`(提交)按钮。点击提交按钮时,表单中的数据将会被发送到 `action` 属性指定的 URL 上。
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2020-12-16 07:37:30 +00:00
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2019-12-26 12:05:59 +00:00
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例如:
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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`<button type="submit">this button submits the form</button>`
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# --instructions--
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2021-01-08 19:20:48 +00:00
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请在表单(`form` 元素)底部创建一个 `button` 元素,将按钮的 `type` 属性值设置为 `submit`,内容文本为 `提交`。
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2020-12-16 07:37:30 +00:00
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# --hints--
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2021-01-08 19:20:48 +00:00
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表单内部应有一个 `button` 元素。
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2020-12-16 07:37:30 +00:00
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```js
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assert($('form').children('button').length > 0);
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```
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2021-01-08 19:20:48 +00:00
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按钮的 `type` 属性值应为 `submit`。
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2020-12-16 07:37:30 +00:00
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```js
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assert($('button').attr('type') === 'submit');
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2018-10-10 22:03:03 +00:00
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```
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2021-01-08 19:20:48 +00:00
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提交按钮的文本应为 `Submit` 。
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2020-12-16 07:37:30 +00:00
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```js
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assert(
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$('button')
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.text()
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.match(/^\s*submit\s*$/gi)
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);
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```
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2021-01-08 19:20:48 +00:00
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`button` 元素应有结束标签。
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2020-12-16 07:37:30 +00:00
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```js
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assert(
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code.match(/<\/button>/g) &&
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code.match(/<button/g) &&
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code.match(/<\/button>/g).length === code.match(/<button/g).length
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);
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2018-10-10 22:03:03 +00:00
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```
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2021-01-13 02:31:00 +00:00
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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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<a href="#"><img src="https://bit.ly/fcc-relaxing-cat" 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://freecatphotoapp.com/submit-cat-photo">
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<input type="text" placeholder="cat photo URL">
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</form>
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</main>
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```
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2020-12-16 07:37:30 +00:00
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# --solutions--
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2018-10-10 22:03:03 +00:00
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2021-01-13 02:31:00 +00:00
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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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<a href="#"><img src="https://bit.ly/fcc-relaxing-cat" 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://freecatphotoapp.com/submit-cat-photo">
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<input type="text" placeholder="cat photo URL">
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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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