您的位置:首页 > 其它

滚动条固定位置

2014-08-17 21:56 176 查看
<!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>无标题文档</title>
<style>
*{margin:0; padding:0;}
.fixed{position:fixed; top:0; left:0; width:500px;height:100px; background:#f60; margin-left:100px;}

</style>

</head>

<body>
<div style="height:300px;"></div>
<div id="test" style="height:100px; background:#f60; margin-left:100px;"></div>

<script>
var test=document.getElementById("test");
var X= test.getBoundingClientRect().top;
window.onscroll=function(){
if(document.documentElement.scrollTop>=X||document.body.scrollTop>=X){
test.className="fixed";
}else{
test.className="";
}
};

/*
  var X= this.getBoundingClientRect().left;

  var Y =this.getBoundingClientRect().top;

再加上滚动距离,就可以得到绝对位置

  var X= this.getBoundingClientRect().left+document.documentElement.scrollLeft;

  var Y =this.getBoundingClientRect().top+document.documentElement.scrollTop;
*/
</script>
<div style="height:1000px;"></div>
</body>
</html>
内容来自用户分享和网络整理,不保证内容的准确性,如有侵权内容,可联系管理员处理 点击这里给我发消息
标签: