ajax异步请求 

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Ajax实例.aspx.cs" Inherits="jQuery.Ajax实例" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <link href="../css/ui-lightness/jquery-ui-1.9.1.custom.min.css" rel="stylesheet"
        type="text/css" />
    <script src="../js/jquery-1.8.2.js" type="text/javascript"></script>
    <script src="../js/jquery-ui-1.9.1.custom.min.js" type="text/javascript"></script>
    <script type="text/javascript">
        var loginin = function (data) {
            if (data == "ok") {
                alert("登录成功");
            }
            else if (data == "error") {
                alert("登录失败1");
            }
            else {
                alert("登录失败");
            }
        }

        $(function () {//异步方法             
　　　　　　　　   $("#Butto").click(function () {
                $("#login").dialog({
                    resizable: false,
                    height: 340,
                    width:300,
                    modal: true,
                    buttons: {
                        "登录": function () {
                            var username = $("#username").val();
                            var psd = $("#psd").val();
                            alert(username + psd);
                            $.post("loginAjax.ashx", {
                                "username": username,
                                "psd": psd
                            }, loginin);
                         $("#login").dialog("close");
                        },
                        "取消": function () {
                            $(this).dialog("close");
                        }
                    }
                    
                });
            });
        });

        //控件
        function okclick() {
            alert("ok");
        }

        //后台检测是否登录  动态修改
        $(function () {
            $.post("检测是否登录.ashx", {}, function (data) {
                if (data == "已经登录") {
                    var bo = $("#Butto");         //方法一
                    bo[0].value = "已经登录";

                    $("#Butto").val("已经登录");  //方法二
                }
            });
        })
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <input type="button" id="Butto" value="登录" />
    <div id="login" title="登录页面" style="display:none">
        <table>
            <tr>
                <td>用户名：</td>
                <td>
               <%-- <input type="text" id="username" runat="server" />--%>
                    <asp:TextBox ID="username" ValidationGroup="ss" runat="server"></asp:TextBox>
                </td><td>
                <asp:RequiredFieldValidator ID="RequiredFieldValidator1" ValidationGroup="ss" runat="server" ControlToValidate="username" Text="不能为空" ErrorMessage="不能为空">
                </asp:RequiredFieldValidator></td>
            </tr>
            <tr>
                <td>密码：</td>
                <td><input type="text"  id="psd" /></td>
            </tr>   
            <tr>
                <td><asp:Button ID="Button1" ValidationGroup="ss" runat="server" Text="Button" OnClientClick="okclick()" /></td>
                
            </tr>    
        </table>
    </div>
    </form>
</body>
</html>

　　

posted @ 2013-06-04 11:05  张国朋  阅读(227)  评论(0)    收藏  举报