Code-Snippets-Functions/Execute a function on a child site/WooCommerce/checkout-order-review-refresh.txt

add_filter( 'woocommerce_checkout_fields', 'wc_checkout_fields_trigger_refresh', 9999 );
  
function wc_checkout_fields_trigger_refresh( $fields ) {
   $fields['billing']['billing_company']['class'][] = 'update_totals_on_change';
    
   // ADD AS MANY FIELDS AS YOU LIKE, SAME FORMAT, SEE LIST BELOW
   // E.G. $fields['account']['account_password']['class'][] = 'update_totals_on_change';
 
   return $fields;
}