82 lines
2.9 KiB
Markdown
82 lines
2.9 KiB
Markdown
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---
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id: 587d7dbd367417b2b2512bb4
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title: Store Data with Sass Variables
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required:
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- src: 'https://cdnjs.cloudflare.com/ajax/libs/sass.js/0.10.9/sass.sync.min.js'
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raw: true
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challengeType: 0
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videoUrl: ''
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localeTitle: 使用Sass变量存储数据
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---
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## Description
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<section id="description"> Sass的一个与CSS不同的特性是它使用变量。它们被声明并设置为存储数据，类似于JavaScript。在JavaScript中，使用<code>let</code>和<code>const</code>关键字定义变量。在Sass中，变量以<code>$</code>开头，后跟变量名。以下是几个例子： <blockquote> $ main-fonts：Arial，sans-serif; <br> $ headings-color：green; <br><br> //使用变量： <br> h1 { <br> font-family：$ main-fonts; <br>颜色：$ headings-color; <br> } </blockquote>变量有用的一个例子是当许多元素需要是相同的颜色时。如果更改了该颜色，则编辑代码的唯一位置是变量值。 </section>
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## Instructions
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<section id="instructions">创建一个变量<code>$text-color</code>并将其设置为红色。然后将<code>.blog-post</code>和<code>h2</code>的<code>color</code>属性值更改为<code>$text-color</code>变量。 </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: 您的代码应该具有为<code>$text-color</code>声明的Sass变量，其值为red。
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testString: 'assert(code.match(/\$text-color:\s*?red;/g), "Your code should have a Sass variable declared for <code>$text-color</code> with a value of red.");'
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- text: 您的代码应使用<code>$text-color</code>变量来更改<code>.blog-post</code>和<code>h2</code>项的<code>color</code> 。
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testString: 'assert(code.match(/color:\s*?\$text-color;/g), "Your code should use the <code>$text-color</code> variable to change the <code>color</code> for the <code>.blog-post</code> and <code>h2</code> items.");'
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- text: 您的<code>.blog-post</code>元素应该是红色。
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testString: 'assert($(".blog-post").css("color") == "rgb(255, 0, 0)", "Your <code>.blog-post</code> element should have a </code>color</code> of red.");'
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- text: 你的<code>h2</code>元素应该是红色。
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testString: 'assert($("h2").css("color") == "rgb(255, 0, 0)", "Your <code>h2</code> elements should have a </code>color</code> of red.");'
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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 type='text/sass'>
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.header{
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text-align: center;
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}
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.blog-post, h2 {
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color: red;
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}
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</style>
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<h1 class="header">Learn Sass</h1>
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<div class="blog-post">
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<h2>Some random title</h2>
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<p>This is a paragraph with some random text in it</p>
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</div>
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<div class="blog-post">
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<h2>Header #2</h2>
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<p>Here is some more random text.</p>
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</div>
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<div class="blog-post">
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<h2>Here is another header</h2>
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<p>Even more random text within a paragraph</p>
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</div>
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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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```js
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// solution required
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```
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</section>
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