<!DOCTYPE html>
<html>
<head>
<style>
#myDIV { border: 1px solid black;
background-color: lightblue;
}
</style>
</head>
<body>
<h1>使用 JavaScript 更改 padding-right</h1>
<p>点击“试一试”按钮来改变 DIV 元素的 padding-right 属性：</p>
<button onclick="myFunction()">试一试</button>
<div id="myDIV">
Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat...
</div>
<script>
function myFunction() { document.getElementById("myDIV").style.paddingRight = "50px";}
</script>
</body>
</html>