学步园

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 ID="TextBoxAccount" runat="server"></asp:TextBox><br />
            <input id="btnrReg" type="button" value="注册" onclick="VeryRegAccount()" />
Javascript脚本：
View Code 

<script src="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>