菜鸟教程在线编辑器

AI 编程工具
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>菜鸟教程(runoob.com)</title>  
<style>
[lang|=en]
{
	color:blue;
}
</style>
</head>

<body>
<h2>将适用:</h2>
<p lang="en">Hello!</p>
<p lang="en-us">Hi!</p>
<p lang="en-gb">Ello!</p>
<hr>
<h2>将不适用:</h2>
<p lang="us">Hi!</p>
<p lang="no">Hei!</p>
</body>
</html>
xxxxxxxxxx
 
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>菜鸟教程(runoob.com)</title>  
<style>
[lang|=en]
{
    color:blue;
}
</style>
</head>
​
<body>
<h2>将适用:</h2>
<p lang="en">Hello!</p>
<p lang="en-us">Hi!</p>
<p lang="en-gb">Ello!</p>
<hr>
<h2>将不适用:</h2>
<p lang="us">Hi!</p>
<p lang="no">Hei!</p>
</body>
</html>