<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>jq之demo</title>
<!--线上jq库-->
<script src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
/*动画*/
$("div").animate({
/*高度显示/隐藏切换*/
height:'toggle'
});
});
});
</script>
</head>
<body>
<button>开始</button>
<p>html元素想要移动把position设为relative,fixed或absolute</p>
<div style="background: aqua;height: 50px;width: 60px;position: absolute;">收起/滑下切换</div>
</html>









