無限的ajax滾動分頁循環

Question

我正在使用無限的ajax滾動。 它正在工作，因為我可以點擊加載更多項目，這將加載內容。 然而，我應該停在最后一頁，並顯示“沒有更多的帖子”，而是仍然顯示“加載更多項目”鏈接，點擊時再次從第2頁開始分頁。

安慰：

Welcome at page 2, the original url of this page would be: /website/home/2
Welcome at page 3, the original url of this page would be: /website/home/3

我應該顯示“沒有更多的帖子” - 而是繼續如下：

Welcome at page 4, the original url of this page would be: /website/home/2
Welcome at page 5, the original url of this page would be: /website/home/3

IAS：

<script type="text/javascript">
var ias = $.ias({
  container: "#posts",
  item: ".post",
  pagination: "#pagination",
  next: ".next a"
});

ias.extension(new IASSpinnerExtension());
ias.extension(new IASTriggerExtension({offset: 1}));
ias.extension(new IASNoneLeftExtension({text: 'There are no more posts.'}));
jQuery.ias().extension(new IASPagingExtension());
jQuery.ias().on('pageChange', function(pageNum, scrollOffset, url) {

console.log(
    "Welcome at page " + pageNum + ", " +
    "the original url of this page would be: " + url    
);

});     
</script>

我試圖實現以下，它不起作用：

if(url == '/website/home/2' && pageNum > 2) {
jQuery.ias().destroy();
}

我正在使用來自http://www.phpeasystep.com/phptu/29.html的分頁

分頁：

$targetpage = "home.php";   
$limit = 10;                            
$page = $_GET['page'];
if($page) 
    $start = ($page - 1) * $limit;      
else
    $start = 0; 



$query2 = $pdo->prepare("select count(*) from table where...");
$query2->execute(array(':id' => $id));
$total_pages = $query2->fetchColumn();  



if ($page == 0) $page = 1;                  
$prev = $page - 1;                          
$next = $page + 1;                          
$lastpage = ceil($total_pages/$limit);      
$lpm1 = $lastpage - 1;                      


$pagination = "";
if($lastpage > 1)
{   
    $pagination .= "<ul class=\"pagination\">";

    if ($page > 1) 
        $pagination.= " <li class=\"next\"><a href=\"$targetpage?page=$prev\">&laquo;</a></li>";
    else
        $pagination.= "<li class=\"disabled\"><a href=\"#\">&laquo;</a></li>";  


    if ($lastpage < 7 + ($adjacents * 2))   
    {   
        for ($counter = 1; $counter <= $lastpage; $counter++)
        {
            if ($counter == $page)
                $pagination.= "<li class=\"active\"><a href=\"#\">$counter<span class=\"sr-only\">(current)</span></a></li>";
            else
                $pagination.= " <li class=\"next\"><a href=\"$targetpage?page=$counter\">$counter</a></li>";                    
        }
    }
    elseif($lastpage > 5 + ($adjacents * 2))    
    {

        if($page < 1 + ($adjacents * 2))        
        {
            for ($counter = 1; $counter < 4 + ($adjacents * 2); $counter++)
            {
                if ($counter == $page)
                    $pagination.= "<li class=\"active\"><a href=\"#\">$counter<span class=\"sr-only\">(current)</span></a></li>";
                else
                    $pagination.= " <li class=\"next\"><a href=\"$targetpage?page=$counter\">$counter</a></li>";                    
            }
            $pagination.= "";
            $pagination.= " <li class=\"next\"><a href=\"$targetpage?page=$lpm1\">$lpm1</a></li>";
            $pagination.= " <li class=\"next\"><a href=\"$targetpage?page=$lastpage\">$lastpage</a></li>";      
        }

        elseif($lastpage - ($adjacents * 2) > $page && $page > ($adjacents * 2))
        {
            $pagination.= " <li class=\"next\"><a href=\"$targetpage?page=1\">1</a></li>";
            $pagination.= " <li class=\"next\"><a href=\"$targetpage?page=2\">2</a></li>";
            $pagination.= "";
            for ($counter = $page - $adjacents; $counter <= $page + $adjacents; $counter++)
            {
                if ($counter == $page)
                    $pagination.= "<li class=\"active\"><a href=\"#\">$counter<span class=\"sr-only\">(current)</span></a></li>";
                else
                    $pagination.= " <li class=\"next\"><a href=\"$targetpage?page=$counter\">$counter</a></li>";                    
            }
            $pagination.= "";
            $pagination.= " <li class=\"next\"><a href=\"$targetpage?page=$lpm1\">$lpm1</a></li>";
            $pagination.= " <li class=\"next\"><a href=\"$targetpage?page=$lastpage\">$lastpage</a></li>";      
        }

        else
        {
            $pagination.= " <li class=\"next\"><a href=\"$targetpage?page=1\">1</a></li>";
            $pagination.= " <li class=\"next\"><a href=\"$targetpage?page=2\">2</a></li>";
            $pagination.= "";
            for ($counter = $lastpage - (2 + ($adjacents * 2)); $counter <= $lastpage; $counter++)
            {
                if ($counter == $page)
                    $pagination.= "<li class=\"active\"><a href=\"#\">$counter<span class=\"sr-only\">(current)</span></a></li>";
                else
                    $pagination.= " <li class=\"next\"><a href=\"$targetpage?page=$counter\">$counter</a></li>";                    
            }
        }
    }


    if ($page < $counter - 1) 
        $pagination.= " <li class=\"next\"><a href=\"$targetpage?page=$next\">&raquo;</a></li>";
    else
        $pagination.= "<li class=\"disabled\"><a href=\"#\">&raquo;</a></li>";
    $pagination.= "</ul>\n";        
}

Answer 1

請嘗試為無限ajax滾動添加一個以下的事件處理程序，如下所示：

jQuery.ias.on('noneLeft', function() {
    console.log('We hit the bottom!');
});

並查看是否在瀏覽器控制台中打印了這個。 如果沒有打印，那么您的分頁鏈接就會出現問題。 交叉驗證。 使用firebug檢查您的HTML並檢查是否生成了有效鏈接。

如果你的分頁是正確的，如果你看到上面的noneLeft事件，那么嘗試使用以下代碼來停止滾動：

pageNum = 0;
jQuery.ias.on('next', function(url) {
    if (url.indexOf("/website/home/2") > -1 && pageNum > 2) {
        return false;
    }
    else{
        pageNum++; 
    }
})

Answer 2

我有一個純jquery的自定義解決方案，這里是如何工作的，

/** Javascript Block **/
//make a request(load_next_set_records) to records that go for content loading by scroll or click of button
$(".load_more_button").on('click',load_next_set_records);
function scrollDetectLimit(){//trigger load_next_set_records(); when scroll reaches a target}

load_next_set_records = function(){
   $.ajax({
      url : '/url_that_returns_json_records',
      data:{
           //required to return next paginated records assumed that records are wrapped within div.record_block that resembles loaded records
           next_records_load_pointer:$(".record_block").length
      },
      dataType : 'json',
      beforeSend:function(){},
      success:function(response){
        if(//response has many records)
          //actions when records exists, append new set of records wrapped with div.record_block
        else
         //simply disable loadmore button see below in error call back

      },
      error:function(xhr){
       //simply disable loadmore button
       $(".load_more_button").before('No more to load');
        $(".load_more_button").fadeOut();
      }
   });
  }

我希望你得到代碼邏輯，這需要根據你的要求進一步更新代碼，讓我知道是否有困難進入它。