--- id: 587d778b367417b2b2512aa7 challengeType: 0 videoUrl: 'https://scrimba.com/c/cVJVefw' forumTopicId: 301030 localeTitle: 将单选按钮包裹在 fieldset 元素中以获得更好的可访问性 --- ## Description
下一个表单主题与单选按钮的可访问性有关。在上一个挑战中，单选按钮含有一个拥有for属性的label标签，for属性指向相关选项的id。然而单选按钮通常成组出现，用户必须其中选择一项。本次挑战介绍一种可以语义化呈现单选按钮组的方法。 使用fieldset标签将单选按钮组包含在里面就可以实现这个目的，通常还会使用legend标签来为单选按钮组提供文字说明。屏幕阅读器也可以朗读这些文字。 当选项的含义很明确时，如：性别选择，fieldset标签与legend标签就可以省略。这时，使用含有for属性的label标签就足够了。 举个例子： ```html
Choose one of these three items:

```
## Instructions
当用户使用邮件注册时，Camper Cat 想知道他们的忍者等级。通过上一个挑战的学习，Camper Cat 创建了一组单选按钮，并为每个选项的label标签添加了for属性，但是 Camper Cat 的代码依然需要你的帮助。请将包含单选按钮组的div标签替换为fieldset标签；将p标签替换为legend标签。
## Tests
```yml tests: - text: '你的代码应该使用 1 个fieldset标签包含单选按钮组。' testString: assert($('fieldset').length == 1); - text: '确保fieldset标签是闭合的。' testString: assert(code.match(/<\/fieldset>/g) && code.match(/<\/fieldset>/g).length === code.match(/
/g).length); - text: '你的代码应该有 1 个包含询问用户忍者等级文字的legend标签。' testString: assert($('legend').length == 1); - text: '你的代码不应该含有div标签。' testString: assert($('div').length == 0); - text: '你的代码不应该有包含询问用户忍者等级文字的p标签。' testString: assert($('p').length == 4); ```
## Challenge Seed
```html

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```
## Solution
```html // solution required ```