115 lines
3.6 KiB
Markdown
115 lines
3.6 KiB
Markdown
---
|
||
id: 58c383d33e2e3259241f3076
|
||
title: Use Attribute Selectors to Style Elements
|
||
challengeType: 0
|
||
videoUrl: ''
|
||
localeTitle: 使用属性选择器来设置样式元素
|
||
---
|
||
|
||
## Description
|
||
<section id="description">您已经为要特定样式的元素提供了<code>id</code>或<code>class</code>属性。这些被称为ID和类选择器。您可以使用其他CSS选择器来选择要设置样式的自定义元素组。让我们再次带出CatPhotoApp来练习使用CSS选择器。对于此挑战,您将使用<code>[attr=value]</code>属性选择器设置CatPhotoApp中复选框的样式。此选择器使用特定属性值匹配和设置元素样式。例如,下面的代码使用属性<code>type</code>和相应的<code>radio</code>值更改所有元素的边距: <blockquote> [type ='radio'] { <br>保证金:20px 0px 20px 0px; <br> } </blockquote></section>
|
||
|
||
## Instructions
|
||
<section id="instructions">使用<code>type</code>属性选择器,尝试在CatPhotoApp中为复选框提供10px的上边距和15px的下边距。 </section>
|
||
|
||
## Tests
|
||
<section id='tests'>
|
||
|
||
```yml
|
||
tests:
|
||
- text: 应使用<code>type</code>属性选择器来选中复选框。
|
||
testString: 'assert(code.match(/<style>[\s\S]*?\[type=("|")checkbox\1\]\s*?{[\s\S]*?}[\s\S]*?<\/style>/gi),"The <code>type</code> attribute selector should be used to select the checkboxes.");'
|
||
- text: 复选框的顶部边距应为10px。
|
||
testString: 'assert((function() {var count=0; $("[type="checkbox"]").each(function() { if($(this).css("marginTop") === "10px") {count++;}});return (count===3)}()),"The top margins of the checkboxes should be 10px.");'
|
||
- text: 复选框的下边距应为15px。
|
||
testString: 'assert((function() {var count=0; $("[type="checkbox"]").each(function() { if($(this).css("marginBottom") === "15px") {count++;}});return (count===3)}()),"The bottom margins of the checkboxes should be 15px.");'
|
||
|
||
```
|
||
|
||
</section>
|
||
|
||
## Challenge Seed
|
||
<section id='challengeSeed'>
|
||
|
||
<div id='html-seed'>
|
||
|
||
```html
|
||
<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
|
||
<style>
|
||
.red-text {
|
||
color: red;
|
||
}
|
||
|
||
h2 {
|
||
font-family: Lobster, monospace;
|
||
}
|
||
|
||
p {
|
||
font-size: 16px;
|
||
font-family: monospace;
|
||
}
|
||
|
||
.thick-green-border {
|
||
border-color: green;
|
||
border-width: 10px;
|
||
border-style: solid;
|
||
border-radius: 50%;
|
||
}
|
||
|
||
.smaller-image {
|
||
width: 100px;
|
||
}
|
||
|
||
.silver-background {
|
||
background-color: silver;
|
||
}
|
||
</style>
|
||
|
||
<h2 class="red-text">CatPhotoApp</h2>
|
||
<main>
|
||
<p class="red-text">Click here to view more <a href="#">cat photos</a>.</p>
|
||
|
||
<a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
|
||
|
||
<div class="silver-background">
|
||
<p>Things cats love:</p>
|
||
<ul>
|
||
<li>cat nip</li>
|
||
<li>laser pointers</li>
|
||
<li>lasagna</li>
|
||
</ul>
|
||
<p>Top 3 things cats hate:</p>
|
||
<ol>
|
||
<li>flea treatment</li>
|
||
<li>thunder</li>
|
||
<li>other cats</li>
|
||
</ol>
|
||
</div>
|
||
|
||
<form action="/submit-cat-photo" id="cat-photo-form">
|
||
<label><input type="radio" name="indoor-outdoor" checked> Indoor</label>
|
||
<label><input type="radio" name="indoor-outdoor"> Outdoor</label><br>
|
||
<label><input type="checkbox" name="personality" checked> Loving</label>
|
||
<label><input type="checkbox" name="personality"> Lazy</label>
|
||
<label><input type="checkbox" name="personality"> Energetic</label><br>
|
||
<input type="text" placeholder="cat photo URL" required>
|
||
<button type="submit">Submit</button>
|
||
</form>
|
||
</main>
|
||
|
||
```
|
||
|
||
</div>
|
||
|
||
|
||
|
||
</section>
|
||
|
||
## Solution
|
||
<section id='solution'>
|
||
|
||
```js
|
||
// solution required
|
||
```
|
||
</section>
|