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BOM2.html
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<!DOCTYPE html>
<html>
<head>
<title>BOM绝对定位在右下角</title>
<meta charset="utf-8">
<meta name="keyword" content="绝对定位">
<meta name="descript" content="BOM绝对定位在右下角">
<style type="text/css">
body{
margin: 0;
padding: 0;
width: 2000px;
height: 2000px;
}
div{
width: 60px;
height: 200px;
background: red;
position: absolute;
bottom: 0;
right: 0;
}
</style>
<!--这种定位不实际，会抖动，因此在非IE6，要用position：fixed； 而在IE6，用此种方法解决，再用运动解决抖动问题-->
<script type="text/javascript">
window.onload = function(){
alert('本例将演示利用‘BOM’，将目标定位在右下角，之前有个案例演示的是利用‘运动’防抖动');
var oDiv = document.getElementById('div1');
window.onscroll = window.onresize = function(){
var hideX = document.documentElement.scrollLeft || document.body.scrollLeft;
var hideY = document.documentElement.scrollTop || document.body.scrollTop;
oDiv.style.left = hideX + document.documentElement.clientWidth - oDiv.offsetWidth + 'px';
oDiv.style.top = hideY + document.documentElement.clientHeight - oDiv.offsetHeight + 'px';
}
}
</script>
</head>
<body>
<div id="div1">
</div>
</body>
</html>