js怎样获取元素滚动的距离_获取元素滚动距离-优快云博客

本文链接：https://blog.youkuaiyun.com/woshidamimi0/article/details/102792193

本文介绍了如何使用JavaScript来判断页面是否滚动到顶部，主要方法是通过检查元素的scrollTop属性，该属性在元素溢出并产生滚动条时可用。

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<!DOCTYPE html>
<html lang="zh">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<meta http-equiv="X-UA-Compatible" content="ie=edge">
	<title></title>
	<style>
		.box{
			width: 500px;
			height: 100px;
			background: gray;
			overflow: auto;
		}
		.item{
			height: 50px;
		}
	</style>
</head>
<body>
	<div class="box" id="c">
		<ul>
			<li class="item"></li>
			<li class="item"></li>
			<li class="item"></li>
			<li class="item"></li>
			<li class="item"></li>
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			<li class="item"></li>
			<li class="item"></li>
			<li class="item"></li>
			<li class="item"></li>
			<li class="item"></li>
			<li class="item"></li>
			<li class="item"></li>
			<li class="item"></li>
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			<li class="item"></li>
			<li class="item"></li>
			<li class="item"></li>
			<li class="item"></li>
			<li class="item"></li>
		</ul>
	</div>
</body>
</html>
<script type="text/javascript">
	var dom = document.getElementById('c');
	dom.addEventListener('scroll',function () {
		console.log('', dom.scrollTop);
	});
</script>