<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
body {
margin: 0;
}
#box {
width: 100px;
height: 100px;
margin: 50px;
border: 30px solid red;
padding: 10px;
background-color: green;
}
</style>
</head>
<body>
<div id="box">
</div>
<script>
// client
var box = document.getElementById('box');
// clientLeft 是border-left 的宽度
// clientTop border-top 的宽度
console.log(box.clientLeft);
console.log(box.clientTop);
// 获取大小 包括padding 但是不包括边框
console.log(box.clientWidth);
console.log(box.clientHeight);
// offsetWidth offsetHeight 包括padding和边框
</script>
</body>
</html>
