function password_cek(req) {

  app.preloader.show('multi');

  $.ajax({

    type: "post",

    url: base_url + 'password_cek',

    data: req,

    success: (res) => {

      if (res.success) {

        showToast('Change Password Success');

      } else {

        app.preloader.hide();

        app.dialog.alert(res.message, 'Error');

      }

    }

  })

}