1.加载两个文件件
<head>
<meta charset="UTF-8">
<title>登录页面</title>
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js">
</script>
<script src="vendor/sweetalert/dist/sweetalert.min.js"></script>
<link rel="stylesheet" type="text/css" href=#<head>
<meta charset="UTF-8">
