NMR jsGrid

Add jsGrid http://js-grid.com tables to your website using the shortcode: [nmr_jsgrid id='your-grid-name'].

Data grids or tables have configurable number of columns, filters, edit, update and delete functionalities.
Configuration of grids is performed on the admin back-end.
Tables can be paginated and need back-end pagination. Ajax calls help to avoid entire page reload.

Example of a toy back-end pagination:

add_action('wp_ajax_nopriv_sample_pagination', function () {
    // assume HTTP GET for this example
    $data = $_GET;
    global $wpdb;
    $sql_base = $wpdb->prepare("SELECT umeta_id, meta_key FROM {$wpdb->prefix}usermeta");
    $sql = $wpdb->prepare("SELECT COUNT(*) FROM ({$sql_base}) t");
    $itemsCount = $wpdb->get_var($sql);
    $pageIndex = intval($data['pageIndex…