W3School TIY
编辑您的代码：
<html> <head> <style type="text/css"> body { background-color="#FFCC80"; background-image:url("../i/eg_bg_desert.jpg"/*tpa=http://www.jb51.net/i/eg_bg_desert.jpg*/); } p { color:white; } </style> <script type="text/javascript"> function changeAttachment() { document.body.style.backgroundAttachment="fixed"; } </script> </head> <body> <input type="button" onclick="changeAttachment()" value="Set background-image to be fixed" /> <p>This is a paragraph</p> <p>This is a paragraph</p> <p>This is a paragraph</p> <p>This is a paragraph</p> <p>This is a paragraph</p> <p>This is a paragraph</p> <p>This is a paragraph</p> <p>This is a paragraph</p> <p>This is a paragraph</p> <p>This is a paragraph</p> <p>This is a paragraph</p> <p>This is a paragraph</p> <p>This is a paragraph</p> <p>This is a paragraph</p> </body> </html>
查看结果: