很多用织梦h5cn做图片类的网站都需要用到无限加载这个功能,这个功能需要用到ajax,下面CMS资源网就告诉大家如何实现这样的功能。
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:
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 `tufei_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 `tufei_archives` as a JOIN `tufei_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']); $row['typelink'] = "<a href='".$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'], 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(); }
然后在需要使用无线加载的模板里引用下面这个js代码:
<script src=""></script>
并在底部添加如下代码:
<script type="text/javascript"> var loadConfig = { url_api:'/plus/list.php', typeid:0, page:2, pagesize:3, 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('<a href="'+data[i].arcurl+'">'); arr.push('<div class="item">'); arr.push('<div class="thumbnail">'); arr.push('<img class="img-responsive" src="'+data[i].picname+'" width=460 height=255 />'); arr.push('</div>'); arr.push('<div class="caption">'); arr.push('<h3>'+data[i].title+'</h3>'); arr.push('<div class="place">'+data[i].shorttitle+'</div>'); arr.push('</div>'); arr.push('</div>'); arr.push('</a>'); } $('.data-list').append(arr.join('')); loadConfig.load_num = rs.load_num; if(total<loadConfig.page*loadConfig.pagesize || loadConfig.page > loadConfig.load_num){ window.removeEventListener('srcoll',loadMoreApply,false); } loadConfig.page++; loadConfig.loading = 0; } } function pullLoad(){ window.addEventListener('scroll', loadMoreApply, false); } pullLoad() checkMobile(); </script>
上面的代码中的”$('.data-list').append(arr.join(''));“里的”data-list“对应模板内列表的外框class属性。
arr.push部分对应的是列表代码,
这样就可以使用无线加载了。
如果在列表页只需把代码中的”typeid:0,“ 修改为”typeid:{dede:field name="typeid"/},“即可。