107 lines
2.4 KiB
Markdown
107 lines
2.4 KiB
Markdown
---
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id: bad87fee1348bd9aede08830
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title: 創建一個表單
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challengeType: 0
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forumTopicId: 16817
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dashedName: create-a-form-element
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---
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# --description--
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我們可以只通過 HTML 來實現發送數據給服務器的表單， 只需要給 `form` 元素添加 `action` 屬性即可。
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例如：
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```html
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<form action="url-where-you-want-to-submit-form-data">
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<input>
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</form>
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```
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# --instructions--
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把現有的 `input` 元素嵌套到一個表單 `form` 元素裏，然後設置 `form` 元素的 `action` 屬性值爲 `"https://www.freecatphotoapp.com/submit-cat-photo"`。
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# --hints--
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現有的 `input` 輸入框應位於新創建的 `form` 表單裏面。
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```js
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const inputElem = document.querySelector('form input');
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assert(
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inputElem.getAttribute('type') === 'text' &&
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inputElem.getAttribute('placeholder') === 'cat photo URL'
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);
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```
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`form` 的 `action` 屬性值應爲 `https://www.freecatphotoapp.com/submit-cat-photo`。
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```js
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const action = $('form').attr('action');
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assert(action.match(/^https:\/\/(www\.)?freecatphotoapp\.com\/submit-cat-photo$/i))
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```
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`form` 元素應有開始標籤和結束標籤。
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```js
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assert(
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code.match(/<\/form>/g) &&
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code.match(/<form [^<]*>/g) &&
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code.match(/<\/form>/g).length === code.match(/<form [^<]*>/g).length
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);
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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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<input type="text" placeholder="cat photo URL">
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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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<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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