3.6 KiB
3.6 KiB
id | title | challengeType | videoUrl | localeTitle |
---|---|---|---|---|
58c383d33e2e3259241f3076 | Use Attribute Selectors to Style Elements | 0 | 使用属性选择器来设置样式元素 |
Description
id
或class
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[attr=value]
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type
和相应的radio
值更改所有元素的边距: [type ='radio'] {
保证金:20px 0px 20px 0px;
}
Instructions
type
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。 Tests
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.");'
Challenge Seed
<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>
Solution
// solution required