56 lines
1.7 KiB
Markdown
56 lines
1.7 KiB
Markdown
---
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id: 587d78b1367417b2b2512b0a
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title: Use a Retina Image for Higher Resolution Displays
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challengeType: 0
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videoUrl: ''
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localeTitle: 使用Retina图像获得更高分辨率的显示
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---
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## Description
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<section id="description">使图像显示为“视网膜”（并为视网膜显示进行优化）的最简单方法是将其<code>width</code>和<code>height</code>值定义为原始文件的一半。以下是仅使用原始高度和宽度的一半的图像示例： <blockquote> <风格> <br> img {身高：250px;宽度：250px; } <br> </样式> <br> <img src =“coolPic500x500”alt =“最精彩的图片”> </blockquote></section>
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## Instructions
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<section id="instructions">将<code>img</code>标记的<code>width</code>和<code>height</code>设置为原始值的一半。在这种情况下，原始<code>height</code>和原始<code>width</code>都是200px。 </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: 你的<code>img</code>标签应该有100像素的<code>width</code> 。
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testString: 'assert($("img").css("width") == "100px", "Your <code>img</code> tag should have a <code>width</code> of 100 pixels.");'
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- text: 你的<code>img</code>标签应该有100像素的<code>height</code> 。
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testString: 'assert($("img").css("height") == "100px", "Your <code>img</code> tag should have a <code>height</code> of 100 pixels.");'
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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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</style>
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<img src="https://s3.amazonaws.com/freecodecamp/FCCStickers-CamperBot200x200.jpg" alt="freeCodeCamp sticker that says 'Because CamperBot Cares'">
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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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