<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>client系列</title>
<style type="text/css">
.box{
width: 200px;
height: 300px;
position: absolute;
border: 1px solid seagreen;
margin: 10px 0px 0px 0px;
padding: 10px;
}
</style>
</head>
<body>
<div class="box"></div>
</body>
<script type="text/javascript">
var box=document.getElementsByClassName('box')[0];
console.log(box.clientTop);
console.log(box.clientLeft);
console.log(box.clientWidth);
console.log(box.clientHeight);
</script>
</html>
