nth-of-type()和nth-child()区别
以下放出二个结构类的代码及运行结果
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>nth-child</title>
<style>
div:nth-child(2) {
color: red;
}
</style>
</head>
<body>
<ul>
<div>1</div>
<p>2</p>
<div>3</div>
<section>
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
</section>
</ul>
</body>
</html>
nth-child(2) 基于body下面的第一个是div但是不满足条件，基于第二个是p 所以body标签内section标签外无div发生变化，section标签中第二个div是基于section标签所以会发生变化，所以2会变红
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>nth-child</title>
<style>
div:nth-of-type(2) {
color: red;
}
</style>
</head>
<body>
<ul>
<div>1</div>
<p>2</p>
<div>3</div>
<section>
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
</section>
</ul>
</body>
</html>
nth-of-type(2) 基于body寻找第二个div，第一个是div匹配不上，第二个是p不符合of-type条件，继续匹配，相当于空气，第三个div相当于第二个，匹配成功，由此可见 3 2会变红
