MySQL JavaScript Kodu Ekleme

<?php

                $api = $db->from('api')->first();

                if(isset($_POST["update"]))
                {
                    $delete = $db->delete('api')->done();
                    $update = $db->insert('api')
                        ->set(array(
                        'google_analytics' => html($_POST["google_analytics"]),
                        'yandex_metrica' => html($_POST["yandex_metrica"]),
                        'canli_destek' => html($_POST["canli_destek"]),
                        'whatsapp' => html($_POST["whatsapp"]),
                              ));

                    if ($update)
                    {
                        swal("success");
                    }

                }

                ?>

<form class="form-horizontal" method="post" action="">
                                    <div class="form-group row">
                                        <label for="google_analytics" class="col-sm-12 control-label col-form-label"><?php echo lang('google_analytics'); ?>:</label>
                                        <div class="col-sm-12">
                                            <textarea class="form-control bg-dark text-white" name="google_analytics" id="google_analytics" rows="7" value="<?php echo $api["google_analytics"]; ?>"><?php echo $api["google_analytics"]; ?></textarea>
                                        </div>
                                    </div>
</form>