<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>滚动条距离底部的距离</title>
</head>
<body>
<div class="box">
<div style="height:10000px;"></div>
</div>
<script>
window.addEventListener('scroll',function(){
console.log(document.documentElement.scrollTop);//代表目前滚动条和最上方的距离多长
console.log(document.documentElement.scrollHeight);//代表整个滚动条多长
console.log(document.documentElement.clientHeight);
console.log(document.documentElement.scrollHeight-document.documentElement.scrollTop-document.documentElement.clientHeight);
})
</script>
</body>
</html>