根据屏幕宽度引入相应css文件

一、使用js加载

<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<link href="" rel="stylesheet" type="text/css" id="css" />
<script>
var w=window.screen.width;//先获取屏幕分辨率大小
var c;
if (w==1280) {
	c="a.css";
} else i f(w==1024) {
	c="b.css";
} else if (w==800) {
	c="c.css";
} else {
	c="d.css";
}
document.getElementById("css").href=c;
</script>
</head>
<body>正文</body>
</html>

<html>

<head>

var w=window.screen.width;//先获取屏幕分辨率大小

var c;

if (w==1280) {

c="a.css";

} else i f(w==1024) {

c="b.css";

} else if (w==800) {

c="c.css";

} else {

c="d.css";

}

document.getElementById("css").href=c;

</script>

</head>

</html>

二、CSS3 @media 查询

......
<link rel="stylesheet" media="screen and (min-width:800px) and (max-device-width:1200px)" href="css/c1.css"/>
<link rel="stylesheet" media="screen and (max-width:800px)" href="css/c2.css"/>
......

......

......

根据屏幕宽度引入相应css文件

5xue