为什么会出现这个了
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm50.aspx.cs" Inherits="WebApplication2.WebForm50" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<script type="text/javascript" src="jquery-2.1.4.min.js"></script>
<script type="text/javascript" src="http://www.imooc.com/data/jquery.validate.js"></script>
<script type="text/javascript" src="http://www.imooc.com/data/jquery.validate.messages_cn.js"></script>
</head>
<body>
<form id="form1" method="get" action="#" >
<div id="divtest">
<input type="submit" value="提交" />
<input type="text" />
<span></span>
<script type="text/javascript">
$(function () {
$("#form1").validate({ rules: { emil: { required: true, email: true } }, errorPlacement: function (error, element) { error.appendTo("span"); } });
});
</script>
</div>
</form>
</body>
</html>
