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CSS实例:让页脚保持在未满屏页面的底部

发布时间:2018-09-12信息来源:admin

在内容不超过一屏的情况下,当浏览器窗口变小那行页脚文字会跟着向上浮动但还是保持在底部。   当内容多出一屏时,他显示在网页的最下边,而不是窗口的最下边;测试了一下,还可以,在IE6、IE7、FF等都没有问题!窗口缩小时也没有问题!   首先是JS脚本: function test(){var infoHeight = document.getElementById("info").scrollHeight;var bottomHeight = document.getElementById("bottom").scrollHeight;var allHeight = document.documentElement.clientHeight;var bottom = document.getElementById("bottom");if((infoHeight bottomHeight) < allHeight){ bottom.style.position = "absolute"; bottom.style.bottom = "0";}else{ bottom.style.position = ""; bottom.style.bottom = "";} setTimeout(function(){test();},10);}test();   查看运行效果: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>CSS实例:让页脚保持在未满屏页面的底部</title><style>*{ margin:0; padding:0}#info{background:#33CCFF}#bottom{background:#FFCC00;width:100%;}</style></head><body><div id="info">2<br />2<br />2<br />2<br />2<br /><br />2<br />2<br />2<br />2<br />2<br /><br />2<br />20000</div><div id="bottom">bottom</div><script language="JavaScript" type="text/javascript">function test(){var infoHeight = document.getElementById("info").scrollHeight;var bottomHeight = document.getElementById("bottom").scrollHeight;var allHeight = document.documentElement.clientHeight;var bottom = document.getElementById("bottom");if((infoHeight bottomHeight) < allHeight){ bottom.style.position = "absolute"; bottom.style.bottom = "0";}else{ bottom.style.position = ""; bottom.style.bottom = "";} setTimeout(function(){test();},10);}test();</script></body></html>

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