[No000068]document.body.clientHeight 和 document.documentElement.clientHeight 的区别

时间：2023-02-15 09:59:38

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>

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