花魁直播高品质美女在线视频互动社区 - 花魁直播官方版

 歡迎來到素材無憂網(wǎng),按 + 收藏我們
登錄 注冊 退出 找回密碼

織夢首頁列表頁AJAX無限加載瀑布流修正

時間: 2018-12-04 09:28 閱讀: 作者:素材無憂網(wǎng)

最近在學(xué)javascript,才慢慢開始讀懂JS代碼。對HTML前臺AJAX加載技術(shù)研究了一番,像博客站或者圖片站運(yùn)用AJAX異步無限加載,做成瀑布流,提高用戶體驗,這是AJAX異步加載的優(yōu)點(diǎn)。

  AJAX異步加載的弊端:屬于WEB前端技術(shù),蜘蛛不會抓JS調(diào)用的內(nèi)容,也就是并不利于SEO優(yōu)化。所以要運(yùn)用這個功能的話最好有一部分直接調(diào)用,另一部分采用AJAX異步加載。

  織夢首頁列表頁AJAX無限加載瀑布流修正(圖1)

接下來用織夢來做AJAX異步加載WEB前端開發(fā)。網(wǎng)上有諸多教程,經(jīng)過筆者整理,給出詳細(xì)說明,修正后分享給大家。

  打開/plus/list.php,找到

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

  下面增加代碼


 

if(isset($_GET['ajax'])){
  $typeid = isset($_GET['typeid']) ? intval($_GET['typeid']): 0;//傳遞過來的分類ID
  $page = isset($_GET['page']) ? intval($_GET['page']): 0;//頁碼
  $pagesize = isset($_GET['pagesize']) ? intval($_GET['pagesize']): 15;//每頁多少條,也就是一次加載多少條數(shù)據(jù)
  $start = $page>0 ? ($page-1)*$pagesize : 0;//數(shù)據(jù)獲取的起始位置。即limit條件的第一個參數(shù)。
  $typesql = $typeid ? " WHERE typeid=$typeid" : '';//這個是用于首頁實(shí)現(xiàn)瀑布流加載,因為首頁加載數(shù)據(jù)是無需分類的,所以要加以判斷,如果無需
  $total_sql = "SELECT COUNT(id) as num FROM `dede_archives`  $typesql ";
  $temp = $dsql->GetOne($total_sql);
  $total = 0;//數(shù)據(jù)總數(shù)
  $load_num =0;
  if(is_array($temp)){
  $load_num= round(($temp['num']-15)/$pagesize);//要加載的次數(shù),因為默認(rèn)已經(jīng)加載了
  $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";
  //echo "$sql";
  $dsql->SetQuery($sql);
  $dsql->Execute('list');
  $statu = 0;//是否有數(shù)據(jù),默認(rèn)沒有數(shù)據(jù)
  $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'];//縮略圖
  $row['stime'] = GetDateMK($row['pubdate']);
  $row['typelink'] = "<a href='".$row['typeurl']."'>".$row['typename']."</a>";//分類鏈
  $row['fulltitle'] = $row['title'];//完整的標(biāo)題
  $row['shorttitle'] = $row['shorttitle'];//副標(biāo)題
  $row['title'] = cn_substr($row['title'], 60);//截取后的標(biāo)題
  $data[$index] = $row;
  $index++;
  }
  if(!empty($data)){
  $statu = 1;//有數(shù)據(jù)
  }
  $result =array('statu'=>$statu,'list'=>$data,'total'=>$total,'load_num'=>$load_num);
  echo json_encode($result);//返回數(shù)據(jù)
  exit();
  }

   模板文件增加內(nèi)容

 在需要用AJAX異步加載的模板的</head>前增加代碼


 

<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script>
  <script type="text/javascript">
  var loadConfig = {
  url_api:'{dede:global.cfg_cmspath/}/plus/list.php', //修正plus目錄
  typeid:{dede:field name='typeid'/}, //首頁此處是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('<li>');
  arr.push('<a href="'+data[i].arcurl+'" class="preview">');
  arr.push('<img class="" width="" height="" alt="data[i].title" src="'+data[i].picname+'" />');
  arr.push('</a>');
  arr.push('[<b>'+data[i].typelink+'</b>]');
  arr.push('<a href="'+data[i].arcurl+'" class="title">'+data[i].title+'</a>');
  arr.push('</li>');
  }
  $('.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();
  </script>

首頁HTML代碼示例  

  注意:首頁模板用arclist標(biāo)簽,用row='3'是初始化調(diào)用的3條;列表模板用list標(biāo)簽,用pagesize='3'。模板里面的<div class="data-list“>與js里面的data-list對應(yīng),需要把循環(huán)部分全部包裹起來
 

<div class="listbox">
  <ul class="e2">
  <div class="data-list">
  {dede:arclist row='3'}
  <li> [field:array runphp='yes']@me = (empty(@me['litpic']) ? "" : "<a href='{@me['arcurl']}' class='preview'><img src='{@me['litpic']}'/></a>"); [/field:array]
  [<b>[field:typelink/]</b>] <a href="[field:arcurl/]" class="title">[field:title/]</a> <span class="info"> <small>日期:</small>[field:pubdate function="GetDateTimeMK(@me)"/] <small>點(diǎn)擊:</small>[field:click/] <small>好評:</small>[field:scores/] </span>
  <p class="intro"> [field:description/]... </p>
  </li>
  {/dede:arclist}
  </div><!--data-list-->
  </ul>
  </div>
  <!-- /listbox -->

。


版權(quán)聲明: 本站資源均來自互聯(lián)網(wǎng)或會員發(fā)布,如果侵犯了您的權(quán)益請與我們聯(lián)系,我們將在24小時內(nèi)刪除!謝謝!

轉(zhuǎn)載請注明: 織夢首頁列表頁AJAX無限加載瀑布流修正

標(biāo)簽:  
模板推薦