56 lines
1.7 KiB
Markdown
56 lines
1.7 KiB
Markdown
|
---
|
|||
|
|
id: 587d78b1367417b2b2512b0a
|
|||
|
|
title: Use a Retina Image for Higher Resolution Displays
|
|||
|
|
challengeType: 0
|
|||
|
|
videoUrl: ''
|
|||
|
|
localeTitle: 使用Retina图像获得更高分辨率的显示
|
|||
|
|
---
|
|||
|
|
|
|||
|
|
## Description
|
|||
|
|
<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>
|
|||
|
|
|
|||
|
|
## Instructions
|
|||
|
|
<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>
|
|||
|
|
|
|||
|
|
## Tests
|
|||
|
|
<section id='tests'>
|
|||
|
|
|
|||
|
|
```yml
|
|||
|
|
tests:
|
|||
|
|
- text: 你的<code>img</code>标签应该有100像素的<code>width</code> 。
|
|||
|
|
testString: 'assert($("img").css("width") == "100px", "Your <code>img</code> tag should have a <code>width</code> of 100 pixels.");'
|
|||
|
|
- text: 你的<code>img</code>标签应该有100像素的<code>height</code> 。
|
|||
|
|
testString: 'assert($("img").css("height") == "100px", "Your <code>img</code> tag should have a <code>height</code> of 100 pixels.");'
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
</section>
|
|||
|
|
|
|||
|
|
## Challenge Seed
|
|||
|
|
<section id='challengeSeed'>
|
|||
|
|
|
|||
|
|
<div id='html-seed'>
|
|||
|
|
|
|||
|
|
```html
|
|||
|
|
<style>
|
|||
|
|
|
|||
|
|
</style>
|
|||
|
|
|
|||
|
|
<img src="https://s3.amazonaws.com/freecodecamp/FCCStickers-CamperBot200x200.jpg" alt="freeCodeCamp sticker that says 'Because CamperBot Cares'">
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
</div>
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
</section>
|
|||
|
|
|
|||
|
|
## Solution
|
|||
|
|
<section id='solution'>
|
|||
|
|
|
|||
|
|
```js
|
|||
|
|
// solution required
|
|||
|
|
```
|
|||
|
|
</section>
|