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需求:做一个ajax登录 主要技术点:jquery ajax以及blur事件 当用户名输入框失去焦点的时候就会触发blur事件,然后进行ajax请求,获得结果(true或者false),如果请求结果为true,就把用户名输入框图片替换成ok,并且输出文字:恭喜您, 这个帐号可以注册,否则就替换成图片no,并且输出文字:账号已存在 源代码: 前台: 复制代码 代码如下: <%@ Page Language="C#" MasterPageFile="~/Top_Down.master" AutoEventWireup="true" CodeFile="RegisterMember.aspx.cs"Inherits="Member_RegisterMember" Title="注册用户" %> <asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server"> <link href="../Admin/css/template.css" rel="stylesheet" type="text/css" /> <link href="../Admin/css/validationEngine.jquery.css" rel="stylesheet" type="text/css" /> <script src="../Admin/scripts/jquery-1.7.1.min.js" type="text/javascript"></script> <script src="../js/jquery.validationEngine.js" type="text/javascript"></script> <script src="../Admin/scripts/isValid.js" type="text/javascript"></script> <script src="../js/languages/jquery.validationEngine-zh_CN.js" type="text/javascript"></script> <script type="text/javascript"> var IsCheck=false; $(function(){ // binds form submission and fields to the validation engine $("#form1").validationEngine(); //当鼠标失去焦点的时候验证 $("#txtUserName").blur(function(){ $.ajax({ url:"Data/GetMemberInfo.ashx?method=CheckExistUserName", data:{"username":$("#txtUserName").val()}, type:"post", success:function(text){ $("#tdUser").empty();//清空内容 var item; if(text=="True"){ item='<img src="../images/ok.png"/>恭喜您,这个帐号可以注册!'; IsCheck=true; } else item='<img src="../images/no.png"/>对不起,这个帐号已经有人注册了!'; $("#tdUser").append(item); } }); }); }); function CheckForm1() { if(IsCheck) { form1.submit(); } else{ alert("请验证用户名"); } } </script> </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"> <form id="form1" action="Data/GetMemberInfo.ashx?method=SaveMemberInfo" method="post"> <div class="content"> <div class="left_side"> <div class="logo_bottom"></div> </div> <div class="right_side zhuce"> <div class="zhuce_title"><p class="hide">注册新用户</p></div> <div class="zhuce_p"> <table width="578" class="zc_table1"> <tr> <td width="93" class="zc_tar">用户名:</td> <td width="200" class="zc_tal"><input type="text" class="zc_input1 validate[required,custom[LoginName]] text-input"name="txtUserName" id="txtUserName"/><!--LoginName--> </td> <td width="269" class="zc_font" id="tdUser"></td> </tr> <tr> <td class="zc_tar">密码:</td> <td class="zc_tal"><input type="password" class="zc_input2 validate[required,custom[LoginPwd]] text-input" id="txtPwd"name="txtPwd"/></td> <td class="zc_font"></td> </tr> <tr> <td class="zc_tar">确认密码:</td> <td class="zc_tal"><input type="password" class="zc_input3 validate[required,equals[txtPwd] text-input" /></td> <td class="zc_font"></td> </tr> <tr> <td class="zc_tar">E-mail:</td> <td class="zc_tal"><input type="text" class="zc_input4 validate[required,custom[email] text-input" name="txtEmail"id="txtEmail"/></td> <td class="zc_font"></td> </tr> <tr> <td class="zc_tar">验证码:</td> <td class="zc_tal" colspan="2"><input type="text" class="zc_input5" name="txtCheckCode" id="txtCheckCode"/><imgsrc="../Admin/FileManage/VerifyChars.ashx" alt="验证码" /></td> </tr> <tr><td> </td></tr> <tr> <td colspan="3" align="center"><a href="javascript:CheckForm1()"><img src="../images/zhuce_sumbit.png" /></a></td> </tr> </table> </div> </div> </div> </form> </asp:Content> 后台事件: 复制代码 代码如下: <%@ WebHandler Language="C#" Class="GetMemberInfo" %> using System; using System.Web; using Common; using czcraft.Model; using czcraft.BLL; using System.Web.SessionState; public class GetMemberInfo : IHttpHandler,IRequiresSessionState { // //记录日志 private static readonly log4net.ILog logger =log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType); public void ProcessRequest(HttpContext context) { String methodName = context.Request["method"]; if (!string.IsNullOrEmpty(methodName)) CallMethod(methodName, context); } /// <summary> /// 根据业务需求调用不同的方法 /// </summary> /// <param name="Method">方法</param> /// <param name="context">上下文</param> public void CallMethod(string Method, HttpContext context) { switch (Method) { case "CheckExistUserName": CheckExistUserName(context); break; //case "SearchMember": // SearchMember(context); // break; case "SaveMemberInfo": SaveMemberInfo(context); break; //case "RemoveMember": // RemoveMember(context); // break; //case "GetMember": // GetMember(context); // break; default: return; } } /// <summary> /// 验证帐号是否存在 /// </summary> /// <param name="context"></param> public void CheckExistUserName(HttpContext context) { string username = context.Request["username"]; if (Tools.IsValidInput(ref username, true)) { context.Response.Write(new memberBLL().CheckExistUserName(username)); } } /// <summary> /// 保存用户信息 /// </summary> /// <param name="context"></param> public void SaveMemberInfo(HttpContext context) { try { //表单读取 string txtUserName = context.Request["txtUserName"]; string txtPwd = context.Request["txtPwd"]; string txtEmail = context.Request["txtEmail"]; string txtCheckCode = context.Request["txtCheckCode"]; //验证码校验 if (!txtCheckCode.Equals(context.Session["checkcode"].ToString())) { return; } //字符串sql注入检测 if (Tools.IsValidInput(ref txtUserName, true) && Tools.IsValidInput(ref txtPwd, true) && Tools.IsValidInput(ref txtEmail, true)) { member info = new member(); info.username = txtUserName; info.password = txtPwd; info.Email = txtEmail; info.states = "0"; if (new memberBLL().AddNew(info) > 0) { SMTP smtp = new SMTP(info.Email); string webpath = context.Request.Url.Scheme + "://" + context.Request.Url.Authority + "/Default.aspx"; smtp.Activation(webpath, info.username);//发送激活邮件 JScript.AlertAndRedirect("注册用户成功!!", "../Default.aspx"); } else { JScript.AlertAndRedirect("注册用户失败!", "../Default.aspx"); } } } catch (Exception ex) { logger.Error("错误!", ex); } } public bool IsReusable { get { return false; } } } |
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