if(isset($_GET['ajax'])){
  //传递过来的分类ID
  $typeid = isset($_GET['typeid']) ? intval($_GET['typeid']): 0;
  //页码
  $page = isset($_GET['page']) ? intval($_GET['page']): 0;
  //每页多少条,也就是一次加载多少条数据
  $pagesize = isset($_GET['pagesize']) ? intval($_GET['pagesize']): 15;
  //数据获取的起始位置。即limit条件的第一个参数。
  $start = $page>0 ? ($page-1)*$pagesize : 0;
  //这个是用于首页实现瀑布流加载,因为首页加载数据是无需分类的,所以要加以判断,如果无需
  $typesql = $typeid ? " WHERE typeid=$typeid" : '';
  $total_sql = "SELECT COUNT(id) as num FROM `dede_archives`  $typesql ";
  $temp = $dsql->GetOne($total_sql);
  $total = 0;//数据总数
  $load_num =0;
  if(is_array($temp)){
    //要加载的次数,因为默认已经加载了
    $load_num= round(($temp['num']-12)/$pagesize);
    $total = $temp['num'];
  }
  $sql = "SELECT a.*,t.typedir,t.typename,t.isdefault,t.defaultname,t.namerule,
        t.namerule2,t.ispart, t.moresite,t.siteurl,t.sitepath
        FROM `dede_archives` as a JOIN `dede_arctype` AS t ON a.typeid=t.id  
        $typesql ORDER BY id DESC LIMIT $start,$pagesize";
//echo "$sql";
   $dsql->SetQuery($sql);
   $dsql->Execute('list');
   $statu = 0;//是否有数据,默认没有数据
   $data = array();
     $index = 0;
while($row = $dsql->GetArray("list")){
     $row['info'] = $row['info'] = $row['infos'] = cn_substr($row['description'],160);
     $row['id'] =  $row['id'];
     $row['filename'] = $row['arcurl'] = GetFileUrl($row['id'],$row['typeid'],
     $row['senddate'],$row['title'],$row['ismake'],
     $row['arcrank'],$row['namerule'],$row['typedir'],$row['money'],
     $row['filename'],$row['moresite'],$row['siteurl'],$row['sitepath']);
     $row['typeurl'] = GetTypeUrl($row['typeid'],$row['typedir'],
     $row['isdefault'],$row['defaultname'],$row['ispart'],
     $row['namerule2'],$row['moresite'],$row['siteurl'],$row['sitepath']);
     if($row['litpic'] == '-' || $row['litpic'] == ''){
        $row['litpic'] = $GLOBALS['cfg_cmspath'].'/images/defaultpic.gif';
     }
    if(!preg_match("#^http:\/\/#i", $row['litpic']) &&$GLOBALS['cfg_multi_site'] == 'Y'){
       $row['litpic'] = $GLOBALS['cfg_mainsite'].$row['litpic'];
    }
  $row['picname'] = $row['litpic'];//缩略图
  $row['stime'] = GetDateMK($row['pubdate']);
  $row['typelink'] = "".$row['typename']."";//分类链
  $row['fulltitle'] = $row['title'];//完整的标题
  $row['shorttitle'] = $row['shorttitle'];//副标题
  $row['title'] = cn_substr($row['title'], 60);//截取后的标题
  $data[$index] = $row;
   $index++;
}
if(!empty($data)){
   $statu = 1;//有数据
}
$result =array('statu'=>$statu,'list'=>$data,'total'=>$total,'load_num'=>$load_num);
echo json_encode($result);//返回数据
exit();
}

$(function(){ 
    var loadConfig = {
        //请求地址
        url_api:'/plus/list.php',
        //0就是首页调用数据  列表:typeid:{dede:field name="typeid"/}
        typeid:{dede:field name="typeid"/},  
        page:2, //开始页码
        pagesize:2, //需要渲染的数据条数
        loading : 0,//加载状态,默认为未加载
    }
    function  loadMoreApply(){
        if(loadConfig.loading == 0){
            var typeid = loadConfig.typeid;
            var page = loadConfig.page;
            var pagesize = loadConfig.pagesize;
            var url = loadConfig.url_api,data={
                ajax:'pullload',
                typeid:typeid,
                page:page,
                pagesize:pagesize
            };
            function ajax(url, data) {
                $.ajax({
                    url: url,
                    data:data,
                    async: false,
                    type: 'GET',
                    dataType: 'json',
                    success: function(data) {
                        addContent(data);
                    }
                });
            }
            ajax(url,data);
        }
    }
    function addContent (rs){
        if(rs.statu== 1){
            var data = rs.list;
            var total = rs.total;
            var arr=[];
            var len = data.length;
            var html = '';
            for(var i=0;i<len;i++){
             html = '<div class="say_out animated bounceIn">'+
               '<div class="left my_pic">'+
                '<img src="'+data[i].picname+'" width="100" height="100" alt=""/>'+
                 '</div>'+
                 '<div class="right my_text">'+
                     '<p> '+data[i].info+'<span> '+data[i].stime+'</span> '+
                    ' </p>'+
                  '</div>'+
                 ' <div class="clear"></div>'+
             '</div>';
            }
            arr.push(html);
            $('#a_say').append(html);
            loadConfig.load_num = rs.load_num;
            if(total loadConfig.load_num){
                 console.log("没有数据了");
                 loadConfig.loading=1;
                 return false;
            }
            loadConfig.page++;
            loadConfig.loading = 0;
        }
    }
    $(window).scroll(function(){ 
        //获取当前文档的高度
        var docHeight = $(document).height();
        //获取当前滚动条的高度
        var scrollTop = $(this).scrollTop();
        //获取当前可视区的高度
        var height = $(this).height();
        if((docHeight-scrollTop-height)<=20){ 
           loadMoreApply(); 
        }
    });
});