79 lines
2.6 KiB
Markdown
79 lines
2.6 KiB
Markdown
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---
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id: 5a94fe3669fb03452672e45f
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title: Reduce Repetition Using the repeat Function
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challengeType: 0
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videoUrl: ''
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localeTitle: 使用重复功能减少重复
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---
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## Description
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<section id="description">使用<code>grid-template-columns</code>和<code>grid-template-rows</code>定义网格结构时，为所创建的每个行或列输入了一个值。让我们说你想要一个100行相同高度的网格。单独插入100个值是不太实际的。幸运的是，有一种更好的方法 - 使用<code>repeat</code>函数指定要重复列或行的次数，后跟逗号和要重复的值。这是一个创建100行网格的示例，每行高度为50px。 <blockquote> grid-template-rows：repeat（100,50px）; </blockquote>您还可以使用repeat函数重复多个值，并在定义网格结构时将该函数插入其他值中。这就是我的意思： <blockquote> grid-template-columns：repeat（2,1fr 50px）20px; </blockquote>这意味着： <blockquote> grid-template-columns：1fr 50px 1fr 50px 20px; </blockquote> <strong>注意</strong> <br> <code>1fr 50px</code>重复两次，然后是20px。 </section>
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## Instructions
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<section id="instructions">使用<code>repeat</code>从<code>grid-template-columns</code>属性中删除重复。 </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>container</code>类应具有<code>grid-template-columns</code>属性，该属性设置为重复3列，宽度为<code>1fr</code> 。
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testString: 'assert(code.match(/.container\s*?{[\s\S]*grid-template-columns\s*?:\s*?repeat\s*?\(\s*?3\s*?,\s*?1fr\s*?\)\s*?;[\s\S]*}/gi), "<code>container</code> class should have a <code>grid-template-columns</code> property that is set to repeat 3 columns with the width of <code>1fr</code>.");'
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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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.item1{background:LightSkyBlue;}
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.item2{background:LightSalmon;}
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.item3{background:PaleTurquoise;}
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.item4{background:LightPink;}
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.item5{background:PaleGreen;}
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.container {
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font-size: 40px;
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min-height: 300px;
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width: 100%;
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background: LightGray;
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display: grid;
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/* change the code below this line */
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grid-template-columns: 1fr 1fr 1fr;
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/* change the code above this line */
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grid-template-rows: 1fr 1fr 1fr;
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grid-gap: 10px;
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}
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</style>
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<div class="container">
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<div class="item1">1</div>
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<div class="item2">2</div>
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<div class="item3">3</div>
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<div class="item4">4</div>
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<div class="item5">5</div>
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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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