ajax点赞功能

用Repeater绑定数据，点赞功能，老大催着要，也没有太大的访问量暂时没写 数据并发

后台写方法读出点赞数据

开始写jQuery

//jquery基本语法就不细说了

<script type="text/javascript">
    $(function(){
    $(".img_zan").mouseover(function(){
      $(this).children().attr("src","images/t_fwsc/Thumb_mouseover1.png");
    });
      $(".img_zan").mouseout(function(){
       $(this).children().attr("src","images/t_fwsc/s-4.png");
    });
    $(".img_zan").click(function(){   
      $(this).children().attr("src","images/t_fwsc/Thumb_up2.png");
//      $(".add0").removeClass("add_1");
//      $(".add0").addClass("add_piao");
//      $(".add0").animate({top:"-100px",opacity:'0'},"slow");

/******************************加一样式开始******************************/
    $(this).next().children().children().next(".add0").removeClass("add_1");
    $(this).next().children().children().next(".add0").addClass("add_piao");
    $(this).next().children().children().next(".add0").animate({top:"-200px",opacity:'0'},"slow");

/******************************加一样式开始******************************/
      var _a= parseInt($(this).next().text());//当前点赞数
      var b="1";//嘻嘻，命名不规范了，测试用的
      var masterId=$("#MasterId").val();//用户Id
      var orgId=$(this).siblings("#OrgId").val();//联盟医院Id

//之前接触过Ajax，好久不写前端快忘干净了，看了看Jquery的API  ----》》》http://www.w3school.com.cn
     $.ajax({
     url:"/ashx/MasterPraiseAjax.ashx",   //发送请求的地址 Get请求方式
     data:{WebName:b,masterId:masterId,OrgId:orgId},//参数 必须以键值对传递 master
     async:false,//类型：Boolean 默认值: true。默认设置下，所有请求均为异步请求。如果需要发送同步请求，请将此选项设置为 false。注意，同步请求将锁住浏览器，用户其它操作必须等待请求完成才可以执行。

     success:function(data){ //返回值

     if(data=="-1")//未登录情况下跳转
     {
      location.href = "Login.aspx"; //location.href实现客户端页面的跳转  
     
     }else if(data=="1"){ //点赞
       _a+=1;
      //alert(data);
     }else if(data=="0"){ //取消点赞
       _a-=1;
      
     }else{
      _a+=1;
      
     }
   
     }
     });
    
      $(this).next().children().text(_a);//给点赞数量重新赋值 （+1or-1）
 
$(this).removeClass("img_zan").addClass("img0");
$(this).next().removeClass("zanshu").addClass("zanshu0");
    });
     
     });
    </script>

---

//下面是一般处理程序

using System;
using System.Collections;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Xml.Linq;
using System.Web.SessionState;
using Common;
using Model.Linq;

namespace Web.ashx
{
    /// <summary>
    /// $codebehindclassname$ 的摘要说明
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    public class MasterPraiseAjax : IHttpHandler, IReadOnlySessionState
    {

public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";

//Ajax传递的参数值
            string a = context.Request.QueryString["WebName"];
            string masterId = context.Request.QueryString["masterId"];
            string orgId = context.Request.QueryString["orgId"];
            try
            {
                if (masterId.IsNullOrEmptyOrWhiteSpace())
                {
                    context.Response.Write("-1");
                }
                else
                {

//一下就是点赞状态的操作的  数据量大的话不建议用如下写法，之后会研究一下 并发点赞  偷了懒了
                    if (!a.IsNullOrEmptyOrWhiteSpace())
                    {
                        phDataContext ph = new phDataContext();
                        PetMasterPraise prais = ph.PetMasterPraise.Where(p=>p.PetMasterId==Convert.ToInt32(masterId)&&p.SourceId==Convert.ToInt32(orgId)&&p.SourceType==2).FirstOrDefault();
                        //点赞
                        if (prais == null)
                        {
                            PetMasterPraise praise = new PetMasterPraise();
                            praise.PetMasterId = Convert.ToInt32(masterId);
                            praise.SourceId = Convert.ToInt32(orgId);
                            praise.SourceType = 2;
                            praise.CreateDate = DateTime.Now;
                            praise.State = 1;
                            praise.Title = "联盟点赞";
                            ph.PetMasterPraise.InsertOnSubmit(praise);
                            ph.SubmitChanges();
                            context.Response.Write(praise.State);

}
                            //点赞
                        else if (prais.State == 0)
                        {
                            prais.State = 1;
                            ph.SubmitChanges();
                            context.Response.Write(prais.State);

}
                        else
                        {
                            //取消点赞
                            prais.State = 0;
                            ph.SubmitChanges();
                            context.Response.Write(prais.State);

}

}
                }
            }
            catch (Exception ex)
            {

LogHelper.WriteLog("联盟点赞异常",ex);
            }
            
        }

public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}

---

<div style="height: 30px; width: 150px; float: left; border: 0px;">

<input type="hidden" id='OrgId' value='<%#Eval("Id") %>' />
            <div class="img_zan">  
            <img src="data:images/t_fwsc/s-4.png" /></div>
             <div style="height: 30px; width: 60px; float: left; border: 0px;">
               <span class="zan_span"><span class="zanshu"><%# StarCount(Eval("Id"),2) %></span><span class="add_1 add0">+1</span>
              </span>
              </div>
                <input type="hidden" runat="server" id="hidPar" value="" />
                <div style="height: 30px; width: 20px; float: left; border: 0px;">
                 </div>
                   <div style="height: 30px; line-height: 30px; width: 40px; float: left; border: 0px;">
                     点赞
                   </div>
                   </div>

小白一枚  写的多有不合理的地方会慢慢改进...

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