Ajax / php page is not working on iOS

My site's pagination is running at all, both pc and android browsers, but on iphone or ipad, it's not working. Is there any solution I should do to improve this all on iOS? I am using ajax with php. My script is simple:

$(document).ready(function(){  
  load_data();  
  function load_data(page)  
  {  
       $.ajax({  
            url:"pagination",  
            method:"POST",  
            data:{page:page},  
            success:function(data){  
                 $('#pagination_data').html(data);  
            }  
       })  
  }  
  $(document).on('click', '.pagination_link', function(){  
       var page = $(this).attr("id");  
       load_data(page);  
  });  
});