<!DOCTYPE html>
<html lang="en">
<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>滚live-server </title>
<style>
#myDiv {
height: 900px;
background-color: gray;
}
#roll_top {
height: 900px;
background-color: green;
color: #FFF;
font-size: 50px;
position: relative;
}
#bottom {
position: absolute;
display: block;
left: 0;
bottom: 0;
}
</style>
</head>
<body>
<div>
<h2>scrollIntoView</h2>
<button id="roll1">scrollIntoView(false)</button>
<button id="roll2">scrollIntoView(true)</button>
<div>
<div id="myDiv"></div>
<div id="roll_top">
scrollIntoView(ture)元素上边框与视窗顶部齐平
<span id="bottom">scrollIntoView(false)元素下边框与视窗底部齐平</span>
</div>
</div>
</div>
</body>
<script>
window.onload = function () {
document.querySelector("#roll1").onclick = function () {
document.querySelector("#roll_top").scrollIntoView(false);
};
document.querySelector("#roll2").onclick = function () {
document.querySelector("#roll_top").scrollIntoView(true);
};
}
</script>
</html>
