叶子的想法，你不用明白，而叶生两面，你必须明白。所以，有人在秋天看到的是生命的衰败和无奈，有人在秋天看到的是生命的辉煌和温怡。到门不敢提凡鸟，看竹何须问主人。
织梦dedecms用来做图片类的网站或者做淘客网站很多都需要用到无限加载这个功能，这个功能需要用到ajax，下面教大家如何实现无限加载的瀑布流功能。
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 `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'];
$row['typelink'] = "".$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();
}
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<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script>并在模板底部添加如下代码：
<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 rel="nofollow noopener noreferrer" 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>');
}
$('.yz_xinwen').append(arr.join(''));
loadConfig.load_num = rs.load_num;
if(total<loadConfig.page*loadConfig.pagesize || loadConfig.page > loadConfig.load_num){
window.removeEventListener('srcoll',loadMoreApply,false);
}
loadConfig.page++;
loadConfig.loading = 0;
}
}
function pullLoad(){
window.addEventListener('scroll', loadMoreApply, false);
}
pullLoad()
checkMobile();
</script>
|
if(total<loadConfig.page*loadConfig.pagesize || loadConfig.page > loadConfig.load_num){
window.removeEventListener('srcoll',loadMoreApply,false);
}
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$('<div style="width:100%; float:left; text-align:center; padding: 10px 0px; color:#fff; background:#00aa98; font-size: 16px;">加载完成</div>').insertAfter('.yz_xinwen');
加上这段代码的意思是：当文章全部加载完的时候在所有文章最底部显示“加载完成”的提示！ 代码的意思是：在类为“.yz_xinwen”的标签下面插入 “加载完成”的DIV标签！如图：
另外在频道页，也就是带多个下级子栏目的频道页，这个代码还有点问题，需要修改plus.php.频道页做不到无限加载，是因为在文章表里面只有子栏目 typeid 而没且关联的父栏目 typeid 所以在查询文章 dede_archives 表的时候，父栏目 typeid 是没有对应的文章。所以为了解决这个问题我在原来的基础上加了个判断，如果当传过来的 typeid 下有子栏目的时候调用该栏目下的所以子栏目文章。
下面我就把修改后的完整代码贴出来。
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。
//获取频道栏目下的子栏目ID
$yz_typeid = $dsql->GetOne("SELECT COUNT(id) as num FROM `dede_arctype` WHERE reid=$typeid ");
if($yz_typeid['num']!=0){
$sql = "SELECT * FROM `dede_arctype` WHERE reid=$typeid";
$dsql->SetQuery($sql);
$dsql->Execute('yz_id');
$typepdid = "";
$yz = 1;
while($row = $dsql->GetArray("yz_id")){
if($yz_typeid['num'] == $yz){
$typepdid .= "(typeid=".$row['id'].")";
}else{
$typepdid .= "(typeid=".$row['id'].") or ";
$yz += 1;
}
}
// echo $yz_typeid['num']."+++".$typepdid;
//exit();
}else {
$typepdid = "typeid=$typeid";
}
$typesql = $typeid ? " WHERE $typepdid" : '';//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")){
$row['description'] = cn_substr($row['description'],90);
$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']);
$row['waparcurl'] = preg_replace("(.*/m/)","/",$row['arcurl']);
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();
}
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到此这篇关于dedecms如何利用javascript ajax如何实现瀑布流下拉无限加载的好代码教程jquery就介绍到这了。有信念不一定成功，没信念一定会失败。更多相关dedecms如何利用javascript ajax如何实现瀑布流下拉无限加载的好代码教程jquery内容请查看相关栏目，小编编辑不易，再次感谢大家的支持！
