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js让一行页脚保持在底部

时间:2020-05-12 人气:1

测了一下，还可以，在IE6、IE7、FIREOFX等都没有问题！窗口缩小时也没有问题！

复制代码代码如下:

<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>

<!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>www.qb5200.com </title> 
<style> 
*{ margin:0; padding:0} 
#info{background:#33CCFF} 
#bottom{background:#FFCC00;width:100%;} 
</style> 
</head> 
<body> 
<div>

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20000</div> 
<div>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>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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