getBoundingClientRect() 来获取页面元素的位置
复制代码 代码如下:
document.documentElement.getBoundingClientRect
复制代码 代码如下:
<span><!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>Demo</title>
</head>
<body>
<div>Demo为了方便就直接用绝对定位的元素</div>
</body>
</html>
<script>
document.getElementById('demo').onclick=function (){
if (document.documentElement.getBoundingClientRect) {
alert("left:"+this.getBoundingClientRect().left)
alert("top:"+this.getBoundingClientRect().top)
alert("right:"+this.getBoundingClientRect().right)
alert("bottom:"+this.getBoundingClientRect().bottom)
<strong>var X= this.getBoundingClientRect().left+document.documentElement.scrollLeft;
var Y = this.getBoundingClientRect().top+document.documentElement.scrollTop;</strong>
alert("Demo的位置是X:"+X+";Y:"+Y)
}
}
</script></span>
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