old/application/views/blog/pagination.php

<?php
    defined('BASEPATH') OR exit('No direct script access allowed');
?>

<script>
    $(() => {
        const queries = parseQueryString();
        if(!queries.page) {
            window.location.search = '?page=1';
        }
    });

    const pages = Math.ceil(parseFloat(<?= $pageCount ?>));
    $('.pagination').twbsPagination({
        visiblePages: 10,
        totalPages: pages,
        first: '<i class="fa fa-angle-double-left"></i>',
        prev: '<i class="fa fa-angle-left"></i>',
        next: '<i class="fa fa-angle-right"></i>',
        last: '<i class="fa fa-angle-double-right"></i>',
        href: true,
        pageVariable: 'page',
    });

    function parseQueryString() {
        let str = window.location.search;
        const objURL = {};

        str.replace(
            new RegExp("([^?=&]+)(=([^&]*))?", "g"),
            function ($0, $1, $2, $3) {
                objURL[$1] = $3;
            }
        );
        return objURL;
    }
</script>