5.1 KiB
5.1 KiB
id | title | challengeType | forumTopicId | dashedName |
---|---|---|---|---|
bad87fee1348bd9aedf08845 | 使用 span 创建行内元素 | 0 | 18370 | use-a-span-to-target-inline-elements |
--description--
可以使用 span 标签来创建行内元素。 还记得怎么使用 btn-block
class 来创建填满整行的按钮吗?
普通按钮
块级按钮
上面的例子就是 "inline" (行内)元素和 "block" (块级)元素的区别。
通过使用行内元素 span
,可以把不同的元素放在同一行,甚至能为一行的不同部分指定不同样式。
使用一个 span
元素,将文本 love
嵌入现在包含文本 Things cats love
的 p
元素中。 然后给 span
元素设置 class text-danger
,使文本变成红色。
对含有文本 Top 3 things cats hate
的 p
元素这样处理:
<p>Top 3 things cats <span class="text-danger">hate:</span></p>
--hints--
span
元素应该在 p
元素内。
assert($('p span') && $('p span').length > 0);
span
元素应该只包括 love
文本。
assert(
$('p span') &&
$('p span').text().match(/love/i) &&
!$('p span')
.text()
.match(/Things cats/i)
);
span
元素应该含有 text-danger
class。
assert($('span').hasClass('text-danger'));
确保 span
元素有一个闭合标签。
assert(
code.match(/<\/span>/g) &&
code.match(/<span/g) &&
code.match(/<\/span>/g).length === code.match(/<span/g).length
);
--seed--
--seed-contents--
<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
<style>
h2 {
font-family: Lobster, Monospace;
}
.thick-green-border {
border-color: green;
border-width: 10px;
border-style: solid;
border-radius: 50%;
}
</style>
<div class="container-fluid">
<h2 class="text-primary text-center">CatPhotoApp</h2>
<a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
<img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
<div class="row">
<div class="col-xs-4">
<button class="btn btn-block btn-primary">Like</button>
</div>
<div class="col-xs-4">
<button class="btn btn-block btn-info">Info</button>
</div>
<div class="col-xs-4">
<button class="btn btn-block btn-danger">Delete</button>
</div>
</div>
<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>
<form action="https://freecatphotoapp.com/submit-cat-photo">
<label><input type="radio" name="indoor-outdoor"> Indoor</label>
<label><input type="radio" name="indoor-outdoor"> Outdoor</label>
<label><input type="checkbox" name="personality"> Loving</label>
<label><input type="checkbox" name="personality"> Lazy</label>
<label><input type="checkbox" name="personality"> Crazy</label>
<input type="text" placeholder="cat photo URL" required>
<button type="submit">Submit</button>
</form>
</div>
--solutions--
<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
<style>
h2 {
font-family: Lobster, Monospace;
}
.thick-green-border {
border-color: green;
border-width: 10px;
border-style: solid;
border-radius: 50%;
}
</style>
<div class="container-fluid">
<h2 class="text-primary text-center">CatPhotoApp</h2>
<a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
<img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
<div class="row">
<div class="col-xs-4">
<button class="btn btn-block btn-primary">Like</button>
</div>
<div class="col-xs-4">
<button class="btn btn-block btn-info">Info</button>
</div>
<div class="col-xs-4">
<button class="btn btn-block btn-danger">Delete</button>
</div>
</div>
<p>Things cats <span class="text-danger">love</span>:</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>
<form action="https://freecatphotoapp.com/submit-cat-photo">
<label><input type="radio" name="indoor-outdoor"> Indoor</label>
<label><input type="radio" name="indoor-outdoor"> Outdoor</label>
<label><input type="checkbox" name="personality"> Loving</label>
<label><input type="checkbox" name="personality"> Lazy</label>
<label><input type="checkbox" name="personality"> Crazy</label>
<input type="text" placeholder="cat photo URL" required>
<button type="submit">Submit</button>
</form>
</div>