I want to add pagination by numbers not previous & next only button , I don't know where is the problem it's cdn or code in jquery here is i work on it ,i want the pagination to be like the simple_numbers pagination
<https://www.codepen.io/HusseinZaki/pen/ddLwwq>?
Looks like the datatables version you are using is not supporting paging properly.
changed datatables cdn to https://cdn.datatables.net/1.10.16/js/jquery.dataTables.min.js (at this time of writing this answer, this is the cdn provided by datatables)
and changed your datatable line to
$('#data').dataTable({"pagingType": "full_numbers"})
Give it a try.