欢迎访问织梦学习网,加群!!!!!!!!!!!!!!!!
当前位置:主页 > 二次开发 >

织梦dedecms首页列表页ajax点击下拉加载更多文章瀑布流效果

2020-02-23 dedecms二次开发 织梦,dedecms,首页,列表,页,ajax,点击,下拉,

dedestudy.cn/' target='_blank'>织梦dedestudy.cn/' target='_blank'>dedecms实现点击下拉加载更多主要用到ajax技术。具体步骤如下:

一、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");

在这段代码下面添加以下代码:

//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 `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 `archives` as a JOIN `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'];        $row['typelink'] = "".$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'], 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();}
二、然后在需要使用瀑布流无线加载的织梦dedecms模板里引用下面这个js代码(这个js大家应该不是很陌生,只要有用到JQ库函数的话一定要引用这个js):

 

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

三、并在模板底部添加以下代码:

<script type="text/javascript">var loadConfig = {                url_api:'/plus/list.php',                typeid:{dede:field name="typeid"/},                page:2,                pagesize:15,  //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('<a href="'+data[i].arcurl+'" title="'+data[i].title+'">');            arr.push('<dl class="yz_card">');            arr.push('<dt class="yz_card_dt">');            arr.push('<img src="'+data[i].picname+'" alt="'+data[i].title+'">');            arr.push('</dt>');            arr.push('<dd class="yz_card_dd">');            arr.push('<p class="yz_card_p">'+data[i].title+'</p>');            arr.push('<div class="yz_card_icon">');            arr.push('<span class="yz_comment">');            arr.push(data[i].click);                                        arr.push('<em class="yz_icon_comment"><img src="/templets/default/images/pingluan.png" height="14"></em>');            arr.push('</span>');            arr.push('</div>');            arr.push('<div class="yz_datetime">'+data[i].stime+'</div>');            arr.push('</dd>');            arr.push('</dl>');            arr.push('</a>');        }        $('.arclist').append(arr.join(''));        loadConfig.load_num = rs.load_num;        if(total<loadConfig.page*loadConfig.pagesize || loadConfig.page > loadConfig.load_num){            window.removeEventListener('srcoll',loadMoreApply,false);        }        loadConfig.page++;        loadConfig.loading = 0;    }}function pullLoad(){    window.addEventListener('scroll', loadMoreApply, false);}pullLoad();</script>
上面的代码中的$('.arclist').append(arr.join(''));里的arclist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。

到此织梦dedecms瀑布流无限加载就实现了。