<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.box{
width: 200px;
height: 200px;
background-color: aquamarine;
}
</style>
</head>
<body>
<div class="box">
</div>
<script src='https://cdn.bootcdn.net/ajax/libs/jquery/3.5.1/jquery.min.js'></script>
<script>
//所有用于动画的属性必须是数字的 color/background-color 是不支持的
$('.box').animate({width:'400px',height:'400px',backgroundColor:'blue'})
</script>
</body>
</html>
