dedecms使用ajax+php实现列表无限加载

这个功能需要用到PHP和ajax技术。

首先找到并打开/plus/list.php文件，在里面找到如下代码：

require_once(dirname(__FILE__)."/../include/common.inc.php");

在其下面添加如下代码：

//列表页瀑布流无限加载代码 if(isset($_GET['ajax'])){ $typeid = isset($_GET['typeid']) ? intval($_GET['typeid']): 0;//传递过来的分类ID $page = isset($_GET['page']) ? intval($_GET['page']): 0;//页码 $pagesize = isset($_GET['pagesize']) ? intval($_GET['pagesize']): 15;//每页多少条，也就是一次加载多少条数据 $start = $page>0 ? ($page-1)*$pagesize : 0;//数据获取的起始位置。即limit条件的第一个参数。 $typesql = $typeid ? " WHERE typeid=$typeid" : '';//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 $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)){ $load_num= round(($temp['num']-15)/$pagesize);//要加载的次数,因为默认已经加载了 $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"; $dsql->SetQuery($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['stime'] = date('Y-m-d H:i', $row['pubdate']); $row['click'] = $row['click']; $row['typelink'] = "<a href='".$row['typeurl']."'>".$row['typename']."</a>";//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'], 80);//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(); }

在对应的模板里引入jQuery文件。

<script src=http://www.dede58.com/a/dedejq/"http:/libs.baidu.com/jquery/1.9.0/jquery.js"></script>

在模板底部添加如下代码：

<script> var loadConfig = { url_api: '/plus/list.php', typeid: { dede: field name = "typeid" / }, page: 2, pagesize: 10, //这个就是滑动一次添加几条信息的参数设置 loading: 0, } 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 }; var sTop = document.body.scrollTop || document.documentElement.scrollTop, dHeight = $(document).height(), cHeight = document.documentElement.clientHeight; // console.log(dHeight); if (sTop + cHeight >= dHeight - cHeight) { loadConfig.loading = 1; 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 length = data.length; for (var i = 0; i < length; i++) { arr.push('<div class="articleindexs">'); arr.push('<div class="articleindexsimg fl"> <a href="' + data[i].arcurl + '"><img src="' + data[i].litpic + '" arr.push('<h3><a href="' + data[i].arcurl + '" title="' + data[i].title + '">' + data[i].title + '</a></h3>'); arr.push('<div class="articleindexifo"><span>' + data[i].stime + '</span><span>' + data[i].writer + '</span><span>' + data[i].click + '次</span></div>'); arr.push('<p>' + data[i].description + '</p>'); arr.push('</div>'); } $('.articleindex-l').append(arr.join('')); loadConfig.load_num = rs.load_num; if (total < loadConfig.page * loadConfig.pagesize || loadConfig.page > loadConfig.load_num) { window.removeEventListener('srcoll', loadMoreApply, false); } loadConfig.page++; loadConfig.loading = 0; } } function pullLoad() { window.addEventListener('scroll', loadMoreApply, false); } pullLoad(); </script>

上面的代码中的$('.articleindex-l').append(arr.join(''));里的articleindex-l对应模板内列表的外框class属性。

arr.push部分对应的是列表中单篇文章的代码。

这样就可以想要使用瀑布流无线加载了。

如果在其它页调用的话只需把代码中的typeid:{dede:field name="typeid"/} 修改为typeid:5（5 就是我们要调用文章的栏目ID）即可。