79 lines
1.6 KiB
Markdown
79 lines
1.6 KiB
Markdown
---
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id: 587d78ae367417b2b2512aff
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challengeType: 0
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videoUrl: 'https://scrimba.com/p/pVaDAv/cMbvNAG'
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forumTopicId: 301116
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title: 使用 order 属性重新排列项目
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---
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## Description
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<section id='description'>
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<code>order</code>属性告诉 CSS flex 容器里项目的顺序。默认情况下，项目排列顺序与源 HTML 文件中顺序相同。这个属性接受数字作为参数，可以使用负数。
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</section>
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## Instructions
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<section id='instructions'>
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给<code>#box-1</code>和<code>#box-2</code>添加 CSS 属性<code>order</code>，<code>#box-1</code>的<code>order</code>属性值设为 <code>2</code>，<code>#box-2</code>的<code>order</code>属性值设为 <code>1</code>。
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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>#box-1</code>元素应有<code>order</code>属性，其值应为 <code>2</code>。
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testString: assert($('#box-1').css('order') == '2');
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- text: <code>#box-2</code>元素应有<code>order</code>属性，其值应为 <code>1</code>。
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testString: assert($('#box-2').css('order') == '1');
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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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#box-container {
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display: flex;
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height: 500px;
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}
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#box-1 {
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background-color: dodgerblue;
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height: 200px;
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width: 200px;
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}
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#box-2 {
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background-color: orangered;
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height: 200px;
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width: 200px;
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}
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</style>
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<div id="box-container">
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<div id="box-1"></div>
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<div id="box-2"></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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```html
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// solution required
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```
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</section>
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