但是，难道不需要引入Css吗
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="http://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script>
<script src="layer.js"></script>
</head>
<body>
<button class="dianji">点击</button>
<script>
$(‘.dianji‘).on(‘click‘,function(){
//初体验
layer.alert(‘内容‘)
})
</script>
</body>
</html>
原文：https://www.cnblogs.com/cn-oldboy/p/14930519.html