72 lines
1.8 KiB
Markdown
72 lines
1.8 KiB
Markdown
|
---
|
|||
|
|
id: bad87fee1348bd9aedc08830
|
|||
|
|
title: Use HTML5 to Require a Field
|
|||
|
|
challengeType: 0
|
|||
|
|
videoUrl: ''
|
|||
|
|
localeTitle: 使用HTML5需要字段
|
|||
|
|
---
|
|||
|
|
|
|||
|
|
## Description
|
|||
|
|
<section id="description">您可以要求特定的表单字段，以便您的用户在填写表单之前无法提交表单。例如，如果要创建所需的文本输入字段，只需在<code>input</code>元素中添加<code>required</code>的属性，如下所示： <code><input type="text" required></code> </section>
|
|||
|
|
|
|||
|
|
## Instructions
|
|||
|
|
<section id="instructions">使您的文本<code>input</code> <code>required</code>字段，以便您的用户无法在不填写此字段的情况下提交表单。然后尝试提交表单而不输入任何文本。了解您的HTML5表单如何通知您该字段是必需的？ </section>
|
|||
|
|
|
|||
|
|
## Tests
|
|||
|
|
<section id='tests'>
|
|||
|
|
|
|||
|
|
```yml
|
|||
|
|
tests:
|
|||
|
|
- text: 您的文本<code>input</code>元素应具有<code>required</code>属性。
|
|||
|
|
testString: 'assert($("input").prop("required"), "Your text <code>input</code> element should have the <code>required</code> attribute.");'
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
</section>
|
|||
|
|
|
|||
|
|
## Challenge Seed
|
|||
|
|
<section id='challengeSeed'>
|
|||
|
|
|
|||
|
|
<div id='html-seed'>
|
|||
|
|
|
|||
|
|
```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="/submit-cat-photo">
|
|||
|
|
<input type="text" placeholder="cat photo URL">
|
|||
|
|
<button type="submit">Submit</button>
|
|||
|
|
</form>
|
|||
|
|
</main>
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
</div>
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
</section>
|
|||
|
|
|
|||
|
|
## Solution
|
|||
|
|
<section id='solution'>
|
|||
|
|
|
|||
|
|
```js
|
|||
|
|
// solution required
|
|||
|
|
```
|
|||
|
|
</section>
|