方法很简单，不用写一大堆js代码,只用三个css样式就可以搞定。 原理就是先把html对象的滚动条全部隐藏，再把body当成一个大的div盒子（和div出现滚动条一个原理），让body出现滚动条。这样就会产生一个假像。 呵呵。很容易理解吧。 以下是程序代码 以下是程序代码 <!DOCTYPE <a href="https://www.gaodaima.com/tag/html" title="查看更多关于html的文章" target="_blank">html</a> PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "<a href="https://www.gaodaima.com/go.html?url=http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">" rel="nofollow">http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"></a>; <html xmlns="<a href="https://www.gaodaima.com/go.html?url=http://www.w3.org/1999/xhtml">" rel="nofollow">http://www.w3.org/1999/xhtml"></a>; <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <style type="text/<a href="https://www.gaodaima.com/tag/css" title="查看更多关于css的文章" target="_blank">css</a>"> *{ margin:0; padding:0;} html{_overflow:hidden;} body{_height:100%; _overflow-y:auto;} #box{ width:100px; height:100px; background-color:#999999; position:fixed;_position:absolute; top:100px; left:100px;} </style> </head> <body> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <p>内容</p> <div id="box"></div> </body> </html>[/code]<br /><input onclick="runEx('CodeText29969')" type="button" value="运行代码"/> <input onclick="doCopy('CodeText29969')" type="button" value="复制代码"/> <input onclick="saveCode('CodeText29969')" type="button" value="另存代码"/><br /> [Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]</div> </div> <p>欢迎大家阅读<span style='color:red;'>《div绝对定位示例_css》</span>,跪求各位点评,若觉得好的话请收藏本文，by <strong>搞代码</strong></p> <hr /><div class="open-message">搞代码网（<a href="www.gaodaima.com" 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以下是程序代码 以下是程序代码 以下是程序代码 以下是程序代码