jQuery中使用$.ajax提交表单

首先，新建Login.html页面：

<!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>
    <title>$.ajax()方法发送请求</title>
    <script type="text/javascript" src="Scripts/jquery-1.4.1.js"></script>
    <style type="text/css">
        body
        {
            font-size: 13px;
        }
        .divFrame
        {
            width: 225px;
            border: solid 1px #666;
        }
        .divFrame .divTitle
        {
            padding: 5px;
            background-color: #eee;
            height: 23px;
        }
        .divFrame .divTitle span
        {
            float: left;
            padding: 2px;
            padding-top: 5px;
        }
        .divFrame .divContent
        {
            padding: 8px;
            text-align: center;
        }
        .divFrame .divContent .clsShow
        {
            font-size: 14px;
            line-height: 2.0em;
        }
        .divFrame .divContent .clsShow .clsError
        {
            font-size: 13px;
            border: solid 1px #cc3300;
            padding: 2px;
            display: none;
            margin-bottom: 5px;
            background-color: #ffe0a3;
        }
        .txt
        {
            border: #666 1px solid;
            padding: 2px;
            width: 150px;
            margin-right: 3px;
        }
        .btn
        {
            border: #666 1px solid;
            padding: 2px;
            width: 50px;
        }
    </style>
    <script type="text/javascript">
        $(function () {
            $("#txtName").focus();//输入焦点
            $("#txtName").keydown(function (event) {
                if (event.which == "13") {//回车键,移动光标到密码框
                    $("#txtPass").focus();
                }
            });
            $("#txtPass").keydown(function (event) {
                if (event.which == "13") {//回车键，用.ajax提交表单
                    $("#btnLogin").trigger("click");
                }
            });
            $("#btnLogin").click(function () { //“登录”按钮单击事件
                //获取用户名称
                var strTxtName = encodeURI($("#txtName").val());
                //获取输入密码
                var strTxtPass = encodeURI($("#txtPass").val());
                //开始发送数据
                $.ajax
                ({ //请求登录处理页
                    url: "Login.aspx", //登录处理页
                    dataType: "html",
                    //传送请求数据
                    data: { txtName: strTxtName, txtPass: strTxtPass },
                    success: function (strValue) { //登录成功后返回的数据
                        //根据返回值进行状态显示
                        if (strValue == "True") {//注意是True,不是true
                            $(".clsShow").html("操作提示，登录成功！" + strValue);
                        }
                        else {
                            $("#divError").show().html("用户名或密码错误！" + strValue);
                        }
                    }
                })
            })
        })
    </script>
</head>
<body>
    <form id="frmUserLogin">
    <div class="divFrame">
        <div class="divTitle">
            <span>用户登录</span>
        </div>
        <div class="divContent">
            <div class="clsShow">
                <div id="divError" class="clsError">
                </div>
                <div>
                    名称：<input id="txtName" type="text" class="txt" /></div>
                <div>
                    密码：<input id="txtPass" type="password" class="txt" /></div>
                <div>
                    <input id="btnLogin" type="button" value="登录" class="btn" />&nbsp;&nbsp
                    <input id="btnReset" type="reset" value="取消" class="btn" />
                </div>
            </div>
        </div>
    </div>
    </form>
</body>
</html>
然后，新建Login.aspx，接收并处理数据：

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Login.aspx.cs" Inherits="JSDemo.Login" ResponseEncoding="gb2312"%>
 
<%
    string strName = System.Web.HttpUtility.UrlDecode(Request["txtName"]);
    string strPass = System.Web.HttpUtility.UrlDecode(Request["txtPass"]);
    bool login = false;
    if (strName == "admin" && strPass == "admin")
    {
        login = true;
    }
    Response.Write(login);
%>

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jQuery中使用$.ajax提交表单

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