官方资料
鱼C课程案例库:https://ilovefishc.com/html5/
html5速查手册:https://man.ilovefishc.com/html5/
css速查手册:https://man.ilovefishc.com/css3/
学习正文
:nth-child(n):https://man.ilovefishc.com/pageCSS3/dotnth-child-n.html
:nth-last-child(n):https://man.ilovefishc.com/pageCSS3/dotnth-child-n.html
:nth-of-type(n):https://man.ilovefishc.com/pageCSS3/dotnth-of-type.html
:nth-last-of-type:https://man.ilovefishc.com/pageCSS3/dotnth-last-of-type.html
:target:https://man.ilovefishc.com/pageCSS3/dottarget.html
:lang:https://man.ilovefishc.com/pageCSS3/dotlang.html
:not:https://man.ilovefishc.com/pageCSS3/dotnot.html
*通过 nth-child(n) 和 nth-last-child(n) 设置父元素下第 n 个元素和倒数第 n 个元素的样式: *
<!DOCTYPE html>
<html>
<head>
<title>结构伪类选择器</title>
<meta charset="utf-8">
<style type="text/css">
/* 设置第三个和倒数第三个的样式 */
p:nth-child(3) {
border: 2px solid green;
}
p:nth-last-child(3) {
border: 2px solid red;
}
</style>
</head>
<body>
<span>这是第一个</span>
<p>I <strong>love</strong> <span>FishC</span></p>
<p>I <span>love</span> FishC.</p>
<p>I <span>love</span> FishC.</p>
<p>I <span>love</span> FishC.</p>
<p>I <span>love</span> FishC.</p>
<p>I <span>love</span> FishC.</p>
<p>I <span>love</span> FishC.</p>
</body>
</html>
:nth-of-type(n) 和 nth-of-type(n) 设置父元素下指定类型的第 n 个和倒数第 n 个元素:
<!DOCTYPE html>
<html>
<head>
<title>结构伪类选择器</title>
<meta charset="utf-8">
<style type="text/css">
/* 设置第三个和倒数第三个的样式 */
p:nth-of-type(3) {
border: 2px solid green;
}
p:nth-last-of-type(3) {
border: 2px solid red;
}
</style>
</head>
<body>
<span>这是第一个</span>
<p>I <strong>love</strong> <span>FishC</span></p>
<p>I <span>love</span> FishC.</p>
<p>I <span>love</span> FishC.</p>
<p>I <span>love</span> FishC.</p>
<p>I <span>love</span> FishC.</p>
<p>I <span>love</span> FishC.</p>
<p>I <span>love</span> FishC.</p>
<span>这是最后一个</span>
</body>
</html>
:target 可以实现送定义锚点并点击跳转的操作:
<!DOCTYPE html>
<html>
<head>
<title>其他伪类选择器</title>
<meta charset="utf-8">
<style type="text/css">
/* 设置锚点的样式 */
:target {
border: 2px solid green;
background-color: #e5eecc;
}
</style>
</head>
<body>
<h1>这是标题</h1>
<p><a href="#fishc1">跳转至内容 1</a></p>
<p><a href="#fishc2">跳转至内容 2</a></p>
<p><a href="#fishc3">跳转至内容 3</a></p>
<p>请点击上面的链接,:target 选择器会突出显示当前活动的 HTML 锚。</p>
<p id="fishc1"><b>内容 1...</b></p>
<p id="fishc2"><b>内容 2...</b></p>
<p id="fishc3"><b>内容 3...</b></p>
</body>
</html>
:lang 用于选定带有以指定值开头的 lang 属性的元素:
<!DOCTYPE html>
<html>
<head>
<title>其他伪类选择器</title>
<meta charset="utf-8">
<style type="text/css">
/* :lang 为不同的 lang 属性赋值 */
:lang(en) {
border: 2px solid red;
}
:lang(ch) {
border: 2px solid green;
}
</style>
</head>
<body>
<p lang="en">I love FishC.</p>
<p lang="ch">我爱鱼C。</p>
</body>
</html>
:not(select) 选定除指定元素外的所有元素:
<!DOCTYPE html>
<html>
<head>
<title>其他伪类选择器</title>
<meta charset="utf-8">
<style type="text/css">
/* 使用否定选择器 */
span {
color: red;
}
:not(span){
color:green;
}
</style>
</head>
<body>
<span>text</span>
<p lang="en">I love FishC.</p>
<p lang="ch">我爱鱼C。</p>
</body>
</html>