×

JQuery+Ajax无刷新分页的实例代码

作者:Terry2017.02.14来源:Web前端之家浏览:10560评论:0
关键词:JQueryJS
先看效果图:

实现原理很简单,使用了jquery.pagination这个插件,每当点击页码时异步去服务器去取该页的数据,简单介绍如下:
一、数据库表结构:很简单  就四个字段 分别是News_id  News_title  News_time  News_readtimes

二、前台页面代码:

复制代码 代码如下:

<head runat="server">
    <title>JQuery无刷新分页</title>
    <link href="Styles/common.css" rel="stylesheet" type="text/css" />
    <link href="Styles/paging.css" rel="stylesheet" type="text/css" />
    <script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
    <script src="Scripts/jquery.pagination.js" type="text/javascript"></script>
    <script type="text/javascript">   
    var pageIndex = 0;
    var pageSize = 3;

    $(function() {      
        InitTable(0);             

        $("#Pagination").pagination(<%=pageCount %>, {
            callback: PageCallback,
            prev_text: '上一页',
            next_text: '下一页',
            items_per_page: pageSize,
            num_display_entries: 6,//连续分页主体部分分页条目数
            current_page: pageIndex,//当前页索引
            num_edge_entries: 2//两侧首尾分页条目数
        });

        //翻页调用
        function PageCallback(index, jq) {          
            InitTable(index);
        }

        //请求数据
        function InitTable(pageIndex) {                               
            $.ajax({
                type: "POST",
                dataType: "text",
                url: 'Ajax/PagerHandler.ashx',
                data: "pageIndex=" + (pageIndex + 1) + "&pageSize=" + pageSize,
                success: function(data) {                                
                    $("#Result tr:gt(0)").remove();//移除Id为Result的表格里的行,从第二行开始(这里根据页面布局不同页变)
                    $("#Result").append(data);//将返回的数据追加到表格
                }
            });           
        }
    });
    </script>
</head>


复制代码 代码如下:

<form id="form1" runat="server">
    <center>
        <table id="Result" border="1" cellpadding="5" style="border-collapse: collapse; margin:20px;
            border: solid 1px #85A8BE;width:60%">
            <tr>
                <th style="width: 10%">
                    ID
                </th>
                <th style="width: 60%">
                    标题
                </th>
                <th style="width: 20%">
                    更新时间
                </th>
                <th style="width: 10%">
                    点击量
                </th>
            </tr>
        </table>
        <div id="Pagination" class="paging">
        </div>
    </center>
    </form>

三、页面后台文件

这里主要是获取记录总数:

复制代码 代码如下:

public string pageCount = string.Empty;//总条目数

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                pageCount = new News().GetNewsCount();
            }
        }


四、最主要的是ajax处理程序:PagerHandler.ashx
复制代码 代码如下:

 public class PagerHandler : IHttpHandler
    {
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            string str = string.Empty;
            int pageIndex = Convert.ToInt32(context.Request["pageIndex"]);
            int size = Convert.ToInt32(context.Request["pageSize"]);
            if (pageIndex == 0)
            {
                pageIndex = 1;
            }
            int count = 0;

            News n = new News();
            List<News> list = n.GetNewsList(pageIndex, size, ref count);
            StringBuilder sb = new StringBuilder();
            foreach (News p in list)
            {
                sb.Append("<tr><td>");
                sb.Append(p.News_id);
                sb.Append("</td><td>");
                sb.Append("<a href='#'>"+p.News_title+"</a>");
                sb.Append("</td><td>");
                sb.Append(p.News_time);
                sb.Append("</td><td>");
                sb.Append(p.News_readtimes);
                sb.Append("</td></tr>");
            }
            str = sb.ToString();
            context.Response.Write(str);
        }

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

您的支持是我们创作的动力!
温馨提示:本文作者系Terry ,经Web前端之家编辑修改或补充,转载请注明出处和本文链接:
https://www.jiangweishan.com/article/svg1487001600887.html

网友评论文明上网理性发言已有0人参与

发表评论: