代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>uvi</title>
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body>
<script>
document.write("可用高度："+screen.availHeight+"，可用宽度："+screen.availWidth);
document.write("高度："+screen.height+"，宽度："+screen.width);
</script> </body>
</html>