Examples explaining Ajax mailbox and username uniqueness verification methods

How much do you know about Ajax email and username verification? This article mainly introduces the example code of Ajax mailbox and user name uniqueness verification. Friends who need it can refer to it. I hope it can help everyone.

Without further ado, I will post the code directly for you. The specific code is as follows:

##

 <script type="text/javascript">
    $(function () { 
      $("#txtEmail").blur(function () {
        $.ajax({
          type: "post",
          url: "reg.ashx?email=" + $.trim($("#txtEmail").val()) + "&d=" + (+new Date()),
          success: function (data) {
            var vCount = parseInt(data);
            if (vCount == 0) {
              alert("邮箱可以使用");
            }
            else {
              alert("邮箱已经被占用");
            }
          }
        });
      });
      $("#checkpwd").blur(function () {
        return CheckPwd();
      });
    });
    function CheckPwd()
    {
      var bCheck = true;
      if ($.trim($("#pwd").val()) != $.trim($("#checkpwd").val()))
      {
        alert("两次密码输入不一致");
        bCheck = false;
      }
      return bCheck;
    }
  </script>

reg.ashx code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace WebT1.Ti.html2
{
  /// <summary>
  /// reg 的摘要说明
  /// </summary>
  public class reg : IHttpHandler
  {
    public void ProcessRequest(HttpContext context)
    {
      if (context.Request["email"] != null)
      {
        string strEmail = context.Request["email"];
        List<UserModel> lstUser = DataService.GetUserList();
        var v = lstUser.Where(p => p.Email == strEmail);
        int iCount = 0;
        if (v.Count() > 0)
        {
          iCount = 1;
        }
        context.Response.ContentType = "text/plain";
        context.Response.Write(iCount.ToString());
      }
    }
    public bool IsReusable
    {
      get
      {
        return false;
      }
    }
  }
  public class DataService
  {
    /// <summary>
    /// 模拟已注册用户数据
    /// </summary>
    public static List<UserModel> GetUserList()
    {
      var list = new List<UserModel>();
      list.Add(new UserModel() { Email = "t1@demo.com" });
      list.Add(new UserModel() { Email = "t2@demo.com" });
      list.Add(new UserModel() { Email = "t3@demo.com" });
      list.Add(new UserModel() { Email = "t4@demo.com" });
      list.Add(new UserModel() { Email = "t5@demo.com" });
      return list;
    }
  }
  public class UserModel
  {
    public string Email { get; set; }
  }
}

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