98 lines
2.5 KiB
Markdown
98 lines
2.5 KiB
Markdown
---
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id: bad87fee1348bd9aefe08806
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challengeType: 0
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videoUrl: 'https://scrimba.com/c/cRkVbsQ'
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forumTopicId: 18311
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title: 使用 class 选择器设置多个元素的样式
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---
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## Description
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<section id='description'>
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通过 CSS class 选择器，多个 HTML 元素可以使用相同的 CSS 样式规则。你可以将<code>red-text</code>class 选择器应用在第一个<code>p</code>元素上。
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</section>
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## Instructions
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<section id='instructions'>
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: '<code>h2</code>元素应该是红色的。'
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testString: assert($("h2").css("color") === "rgb(255, 0, 0)");
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- text: '<code>h2</code>元素应该含有<code>red-text</code> class 选择器。'
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testString: assert($("h2").hasClass("red-text"));
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- text: '第一个<code>p</code>元素应该为红色。'
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testString: assert($("p:eq(0)").css("color") === "rgb(255, 0, 0)");
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- text: '第二和第三个<code>p</code>元素不应该为红色。'
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testString: assert(!($("p:eq(1)").css("color") === "rgb(255, 0, 0)") && !($("p:eq(2)").css("color") === "rgb(255, 0, 0)"));
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- text: '第一个<code>p</code>元素应该包含<code>red-text</code> class 选择器。'
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testString: assert($("p:eq(0)").hasClass("red-text"));
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='html-seed'>
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```html
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<style>
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.red-text {
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color: red;
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}
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</style>
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<h2 class="red-text">CatPhotoApp</h2>
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<main>
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<p>点击查看更多<a href="#">猫图</a>.</p>
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<a href="#"><img src="https://bit.ly/fcc-relaxing-cat" alt="一只仰卧着的萌猫"></a>
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<div>
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<p>猫咪最喜欢的三件东西：</p>
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<ul>
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<li>猫薄荷</li>
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<li>激光笔</li>
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<li>千层饼</li>
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</ul>
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<p>猫咪最讨厌的三件东西：</p>
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<ol>
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<li>跳蚤</li>
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<li>打雷</li>
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<li>同类</li>
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</ol>
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</div>
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<form action="https://freecatphotoapp.com/submit-cat-photo">
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<label><input type="radio" name="indoor-outdoor">室内</label>
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<label><input type="radio" name="indoor-outdoor">室外</label><br>
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<label><input type="checkbox" name="personality">忠诚</label>
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<label><input type="checkbox" name="personality">懒惰</label>
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<label><input type="checkbox" name="personality">积极</label><br>
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<input type="text" placeholder="猫咪图片地址" required>
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<button type="submit">提交</button>
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</form>
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</main>
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```html
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// solution required
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```
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</section>
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