document.body.clientWidth ==> BODY对象宽度
document.body.clientHeight ==> BODY对象高度
document.documentElement.clientWidth ==> 可见区域宽度
document.documentElement.clientHeight ==> 可见区域高度
注意开头<!DOCTYPE ..>的声明，没有该声明时，document.documentElement.clientHeight 始终在Chrome中为1016 px
测试代码：
<!DOCTYPE html >
<head>
<title> New Document </title>
<script language="JavaScript">
function a(){
document.getElementById("bodyheight").innerText = document.body.clientHeight;
document.getElementById("documentheight").innerText = document.documentElement.clientHeight;
}
</script>
</head>
<body style= "height: 1000px;">
<p>
<a href="javascript:a()">click here</a>
<br/>
document.body.clientHeight = <span id="bodyheight"></span> px
<br/>
document.documentElement.clientHeight = <span id="documentheight"></span> px
</p>
</body>
</html>
时间： 2024-08-26 12:12:51