ASP实现静态无刷新分页效果

2015-08-12 16:00:16来源:作者:人点击

 #FormatTableID_0#

 

<html>
<head>
<title>新闻列表简化型</title>
<script language="javascript">
<!--
//ajax 控件也可以做成单独文件方便到其它地方调用
function Ajax()
{
var xhrObj=null;
if(window.XMLHttpRequest)
{
xhrObj=new XMLHttpRequest();
}
else if(window.ActiveXObject)
{
try{
xhrObj=new ActiveXObject("Microsoft.XMLHTTP");
}
catch(e1)
{
try{
xhrObj=new ActiveXObject("MSXML2.XMLHTTP");
}
catch(e2){
try{
xhrObj=new ActiveXObject("MSXML3.XMLHTTP");
}
catch(e3){
alert("创建Ajax失败:"+e3)
}
}
}
}
else
{
alert("未能识别的浏览器");
}
return xhrObj;
}

function $(id)
{
return document.all[id];
}

</script>
<script language="javascript" defer>
   var xhr=new Ajax();
   var page=0;
   var icount=0;   //当前页数
   var pagecount; //总页数
   var count=0;
   var ipagecount=0;
   var ipagesize=5;; //每页显示记录数
   var pp=0;
   var ipage=0;
   var Dom=null;

   function getList(curPage)
   {
           if(ipagecount!=0)
   {
                ipage=parseInt((curPage-1)/ipagecount)+1;
   }else{
        ipage=1
   };
   page=curPage;
   if (pp!=ipage)
   {;
      Dom=null;
      pp=ipage;
              xhr.open("get","data.asp?curpage="+pp,true);
              xhr.onreadystatechange=$CallBack;
              xhr.send(null); 
   }
   else
   {
      $showList();
   }
   }
   function $CallBack()
   {
      if(xhr.readystate==1)
      {
         $("newsList").innerHTML="正在连结服务器";
      }
      else if(xhr.readystate==2 || xhr.readystate==3)
      {
         $("newsList").innerHTML="正在读取数据";
      }
      else if(xhr.readystate==4)
      {
     if (xhr.status==200)
     {
Dom=xhr.responseXML;
$showList();
}
      }
   }
  

   function $showList()
   { 
var html="";
var items=Dom.selectNodes("//item");
icount=Dom.selectNodes("//item").length;                    //数量
count=Dom.selectSingleNode("//data").getAttribute("count"); //总数量
      ipagecount=parseInt((icount-1)/ipagesize)+1;
pagecount=parseInt((count-1)/ipagesize)+1;
startPosition=(page-1)*ipagesize;
endPosition=(page*ipagesize)
if(endPosition>count)endPosition=count
for(var i=startPosition;i<endPosition;i++)
{
     html+="<div id="title"><a href=""+items[i].selectSingleNode("htmlurl").text+"">"+items[i].

selectSingleNode("hits").text+"</a></div>";
}
$("newsList").innerHTML=html;


      var statushtml="<a href="javascript:previousPage()">上一页</a>|<a href="javascript:nextPage()">下一页</a>";
if(pagecount<=10)
{
     for(var i=1;i<=pagecount;i++)
{
    if (i==page)
    {
   statushtml+="<b>"+i+"</b>&nbsp;"
    }
else
{
        statushtml+="<a href="javascript:turnPage("+i+")">"+i+"</a>&nbsp;"
}
}
}
else if(page+10<pagecount && pagecount>10)
{
     if(page%10==0)
{
    for(var i=page-9;i<=page+1;i++)
{
                if (i==page)
        {
        statushtml+="<b>"+i+"</b>&nbsp;"
        }
    else
    {
            statushtml+="<a href="javascript:turnPage("+i+")">"+i+"</a>&nbsp;"
    }
}
}
else if(page % 10 ==1 && page!=1)
{
    for(var i=page-1;i<=page+10;i++)
{
    if (i==page)
        {
        statushtml+="<b>"+i+"</b>&nbsp;"
        }
    else
    {
            statushtml+="<a href="javascript:turnPage("+i+")">"+i+"</a>&nbsp;"
    }
}
}
else if(page<=11)
{
     for(var i=1;i<=11;i++)
{
    if (i==page)
        {
        statushtml+="<b>"+i+"</b>&nbsp;"
        }
    else
    {
            statushtml+="<a href="javascript:turnPage("+i+")">"+i+"</a>&nbsp;"
    }
}
}
else
{
    for(var i=(page-(page % 10));i<=page+(10-(page % 10))+1;i++)
{
    if (i==page)
        {
        statushtml+="<b>"+i+"</b>&nbsp;"
        }
    else
    {
            statushtml+="<a href="javascript:turnPage("+i+")">"+i+"</a>&nbsp;"
    }
}
}
}
else if(page+10>=pagecount && pagecount>10)
{
     if(page%10==0)
{
    for(var i=page-9;i<=page+1;i++)
{
                if (i==page)
        {
        statushtml+="<b>"+i+"</b>&nbsp;"
        }
    else
    {
            statushtml+="<a href="javascript:turnPage("+i+")">"+i+"</a>&nbsp;"
    }
}
}
else if(page % 10 ==1 && page!=1)
{
    for(var i=page-1;i<=page+9;i++)
{
    if (i==page)
        {
        statushtml+="<b>"+i+"</b>&nbsp;"
        }
    else
    {
            statushtml+="<a href="javascript:turnPage("+i+")">"+i+"</a>&nbsp;"
    }
}
}
}
      document.getElementById("pagestatus").innerHTML=statushtml;

   }
   
   function previousPage()
   {
      if (page>1)
      {
      getList(page-1);
      }
else
{
      alert("已经是第一页了");
}
      
   }

   function nextPage()
   {
      if(page<ipagecount)
{
      getList(page+1);
}
else
{
     alert("已经到最后一页了");
}
   }

   function turnPage(p)
   {
           getList(p);
   }

   getList(1);
</script>
</head>
<body>
<div id="newsList"></div>
<div id="pagestatus"></div>
</body>
</html>


建一个文件data.asp
注:这里我用的是ACCESS数据库,库名叫data.mdb,当然这个自己可以定义,库中表名为info字段分别是id(自动编号)、a、b、c、d(日期类型)

 

<%@ Language="VBSCRIPT" codepage="936" %>
<%
response.cachecontrol="no-cache"
response.addHeader "pragma","no-cache"
response.expires=-1
response.expiresAbsolute=now-1
response.contentType="text/xml"
'SQL数据库 Set conn=server.CreateObject("adodb.connection")
'sconn="driver={sql server};server=(local);uid=**;pwd=**;database=***"
'conn.open sconn
set conn=server.CreateObject("adodb.connection")
file=server.mappath("data.mdb")
conn.Open "driver={microsoft access driver (*.mdb)};"&"dbq="&file%>
<?xml version="1.0" encoding="gb2312" ?>
<%
dim iPagesize,rs,sSQL,iCurPage,ipresize,icount,ipagecount

icurpage=trim(request.QueryString("curpage"))

iPagesize=500                          '页大小
set rs=server.createObject("adodb.recordset")
'rs.open "select count(id) from ca_news where status=1",conn,1,1
rs.open "select count(id) from info",conn,1,1
icount=rs(0)                            '总记录数
rs.close

ipagecount=int((icount-1)/iPagesize)+1 '总页数
if icurpage="" then
    icurpage=1
else
    icurpage=cint(icurpage)
end if
if icurpage<1 then
   icurpage=1
end if

if icurPage>ipagecount then icurpage=ipagecount
ipreSize=(iCurPage-1)*ipagesize
if ipresize=0 then
   sSQL="select * from info order by id desc"
else
' sSQL="select top "&ipagesize&" id,title,postdate,hits,htmlurl from news where status=1 and id not in (select top "&ipresize&" id from news where status=1 order by id asc) order by id asc"
sSQL="select top "&ipagesize&" * from info id not in (select top "&ipresize&" id from info order by id desc) order by id desc"
end if
rs.open sSQL,conn,1,1

%>
<data count="<%=icount%>" pagesize="<%=ipagesize %>" pagecount="<%=ipagecount%>">
<%
   while not rs.eof
%>
    <item id="<%=rs("id")%>">
        <title>&lt;![CDATA[<%=rs("a")%>]]&gt;</title>
<htmlurl>&lt;![CDATA[<%=rs("b")%>]]&gt;</htmlurl>
        <postdate><%=DateValue(rs("d")) %></postdate>
        <hits><%=trim(rs("c")) %></hits>
    </item>
<%
   rs.movenext
wend
%>
</data>
<%
rs.close
set rs=nothing
conn.close
set conn=nothing
%>

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