准备好Server端的方法
[System.Web.Services.WebMethod] public static string VeryUserName(string name) { string rtn = "恭喜，此帐号还没有注册，你可以使用。"; if (name == "") rtn = "请填写一个注册帐号。"; if (name == "Insus.NET") rtn = "此用户已经注册，请使用另外帐号。"; return rtn; }
HTML代码：
<asp:TextBox runat="server"></asp:TextBox><br /> <input type="button" value="注册" />
Javascript脚本：
<script src="https://www.jb51.net/scripts/jquery-1.3.2.min.js" type="text/javascript"></script> <script type="text/javascript"> function VeryRegAccount() { $.ajax({ type: "POST", url: "Default.aspx/VeryUserName", data: '{name: "' + $("#<%= TextBoxAccount.ClientID%>")[0].value + '" }', contentType: "application/json; charset=utf-8", dataType: "json", success: OnSuccess, failure: function (response) { alert(response.d); } }); } function OnSuccess(response) { alert(response.d); } </script>