javascript - Infinite Scroll : very little issue -

i've got little problem infinite scroll js.

i using 1 on pre-made pagination working : http://infiniteajaxscroll.com/docs/getting-started.html

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here js of :

var ias = jquery.ias({ container:  '.posts', item:       '.post', pagination: '.pagination', next:       '.next a', delay:      1250 });  ias.extension(new iasspinnerextension()); // add text when there no more pages left load ias.extension(new iasnoneleftextension({text: "you reached end"})); 

and here pagination (just in case) :

sql query :                  // pagination                 $totalproductcat = $dbh->query("select count(*) total products p  left join subcategories s on s.id = p.subcategorieid left join categories c on c.id = s.categorieid s.categorieid = ".$_get['cat']." ")->fetchobject()->total;                 $limit = $_get['limit'] ?? 0;                  $sql = "                 select  s.id, p.id as`productid`, p.name `productname`,                         p.price, p.image `productimage`,                         p.description, p.eval                 products p                 left join subcategories s on s.id = p.subcategorieid                 s.categorieid = :catid                 limit ".$limit.' , '.max_cat;                 $resultcat = $dbh->prepare($sql);                 $resultcat->execute(['catid' => $_get['cat']]); 

pagination code :

                    <?php                     // display pagination                     echo '<nav>';                     echo '<ul class="pagination">';                      // left arrow                     echo '<li class="page-item"><a class="page-link" href="'.($limit == 0 ? '#" onclick="return false"' : '?page=product&amp;cat='.$_get['cat'].'&amp;limit='.($limit - max_cat)).'">&laquo;</a></li>';                     // numbers (1,2,3...)                     for($i = 0; $i < $totalproductcat / max_cat; $i++) {                         echo '<li class="page-item ' .($limit == $i * max_cat ? 'active' : '').'"><a class="page-link" href="?page=product&amp;cat='.$_get['cat'].'&amp;limit='.$i * max_cat.'">'.($i+1).'</a></li>';                     }                      // right arrow                     echo '<li class="page-item next"><a class="page-link" href="'.($limit + max_cat >=$totalproductcat ? '#" onclick="return false"' : '?page=product&amp;cat='.$_get['cat'].'&amp;limit='.($limit + max_cat)).'">&raquo;</a></li>';                     echo '</ul></nav>';                     ?>                 <?php endif;?> 

it working boostrap pagination template (arrows & numbers).

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the problem that, once implement infinite scroll plugin, (jquery-ias.min.js , can download free on website), datas once loaded on page, restart loading , infinite...

i don't message :

// add text when there no more pages left load ias.extension(new iasnoneleftextension({text: "you reached end"})); 

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should implement async: false?

any please.