<!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
html,
body {
height: 100%;
}
div {
width: 300px;
height: 500px;
margin: 30px;
border: 20px dashed violet;
padding: 40px;
background-color: plum;
position: relative;
overflow-x: scroll;
overflow-y: scroll;
display: flow-root;
}
aside {
width: 100px;
height: 800px;
background-color: peru;
position: absolute;
margin: 10px;
padding: 20px;
border: 30px dotted coral;
top: 50px;
}
</style>
</head>
<body>
<div>
<aside></aside>
</div>
<script>
const div = document.querySelector('div')
const aside = document.querySelector('aside')
</script>
</body>
</html>
标签：padding,scrollWidth,clientHeight,aside,height,clientWidth,querySelector,div,marg From： https://www.cnblogs.com/dissipate/p/17470468.html