115 lines
3.6 KiB
Markdown
115 lines
3.6 KiB
Markdown
---
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id: 58c383d33e2e3259241f3076
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title: Use Attribute Selectors to Style Elements
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challengeType: 0
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videoUrl: ''
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localeTitle: 使用属性选择器来设置样式元素
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---
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## Description
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<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>
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## Instructions
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<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>
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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: 应使用<code>type</code>属性选择器来选中复选框。
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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.");'
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- text: 复选框的顶部边距应为10px。
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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.");'
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- text: 复选框的下边距应为15px。
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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.");'
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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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<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
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<style>
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.red-text {
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color: red;
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}
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h2 {
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font-family: Lobster, monospace;
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}
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p {
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font-size: 16px;
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font-family: monospace;
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}
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.thick-green-border {
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border-color: green;
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border-width: 10px;
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border-style: solid;
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border-radius: 50%;
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}
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.smaller-image {
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width: 100px;
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}
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.silver-background {
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background-color: silver;
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}
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</style>
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<h2 class="red-text">CatPhotoApp</h2>
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<main>
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<p class="red-text">Click here to view more <a href="#">cat photos</a>.</p>
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<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>
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<div class="silver-background">
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<p>Things cats love:</p>
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<ul>
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<li>cat nip</li>
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<li>laser pointers</li>
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<li>lasagna</li>
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</ul>
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<p>Top 3 things cats hate:</p>
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<ol>
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<li>flea treatment</li>
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<li>thunder</li>
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<li>other cats</li>
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</ol>
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</div>
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<form action="/submit-cat-photo" id="cat-photo-form">
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<label><input type="radio" name="indoor-outdoor" checked> Indoor</label>
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<label><input type="radio" name="indoor-outdoor"> Outdoor</label><br>
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<label><input type="checkbox" name="personality" checked> Loving</label>
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<label><input type="checkbox" name="personality"> Lazy</label>
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<label><input type="checkbox" name="personality"> Energetic</label><br>
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<input type="text" placeholder="cat photo URL" required>
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<button type="submit">Submit</button>
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</form>
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</main>
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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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