​x
 
<!DOCTYPE html>
<html>
<style>
body {
  height: 2000px;
  width: 2000px;
}
button {
  position: fixed;
}
</style>
​
<body>
<h1>Element 对象</h1>
​
<h2>scrollTop 和 scrollLeft 属性</h2>
​
<p>单击“滚动”可以滚动 body 的内容。</p>
​
<button onclick="myFunction()">滚动</button><br><br>
​
<script>
function myFunction() {
  const html = document.documentElement;
  html.scrollLeft += 30;
  html.scrollTop += 10;
}
</script>
​
</body>
</html>
​