## Confirm a GrabPay payment

Use `stripe.confirmGrabPayPayment` in the [GrabPay payments with Payment Methods](/payments/grabpay.md)
flow when the customer submits your payment form. When called, it will confirm the
[PaymentIntent](/api/payment_intents.md), and automatically redirect the customer to
authorize the transaction. Once authorization is complete, the customer will be redirected
back to your specified `return_url`.

> Note that `stripe.confirmGrabPayPayment` may take several seconds to complete.
> During that time, you should disable your form from being resubmitted and show a waiting
> indicator like a spinner. If you receive an error result, you should be sure to show that
> error to the customer, re-enable the form, and hide the waiting indicator.

By default, `stripe.confirmGrabPayPayment` will trigger a redirect when successful. If
there is an error, or when handling next actions manually by using the
`handleActions: false` option, it will return a `Promise` which resolves with a `result`
object. This object has either:

* `result.paymentIntent`: the successful [PaymentIntent](/api/payment_intents).
* `result.error`: an error. Refer to the [API reference](/api/errors) for all
  possible errors.

**Syntax:** `stripe.confirmGrabPayPayment(...)`

- `clientSecret` (string) **required**
  The [client secret](/api/payment_intents/object.md#payment_intent_object-client_secret)
of the `PaymentIntent`.

- `data` (object)
  Data to be sent with the request. Refer to the [Payment Intents API](/api/payment_intents/confirm.md)
for a full list of parameters.

  - `payment_method` (string | object)
    Either the `id` of an existing [PaymentMethod](/api/payment_methods.md), or an
object containing data to create a `PaymentMethod` with. See the use case sections
below for details.

  - `return_url` (string) **required**
    The URL your customer will be directed to after they complete authentication.

- `options` (object)
  An options object to control the behavior of this method.

  - `handleActions` (boolean)
    Set this to `false` if you want to [manually handle the authorization redirect](/payments/grabpay.md#handle-redirect).
Default is `true`.

### Use case: with a new PaymentMethod

You can confirm the `PaymentIntent` using `stripe.confirmGrabPayPayment` without
passing in any additional data. This will automatically create and attach a new
`PaymentMethod`.

### Data argument properties

- `return_url` (string) **required**
  The URL your customer will be directed to after they complete authentication.

### Confirm with a new PaymentMethod

```js
stripe
  .confirmGrabPayPayment('{PAYMENT_INTENT_CLIENT_SECRET}', {
    // Return URL where the customer should be redirected after
    // the authorization.
    return_url: "https://example.com/checkout/complete",
  })
  .then(function(result) {
    if (result.error) {
      // Inform the customer that there was an error.
    }
  });
```

```es_next
const {error} = await stripe.confirmGrabPayPayment(
  '{PAYMENT_INTENT_CLIENT_SECRET}',
  {
    // Return URL where the customer should be redirected after
    // the authorization.
    return_url: "https://example.com/checkout/complete",
  },
);
```

### Use case: with an existing PaymentMethod

Use `stripe.confirmGrabPayPayment` with an existing `PaymentMethod` by passing its
`id` to `payment_method`. The `PaymentMethod` will be used to confirm the
`PaymentIntent`.

### Data argument properties

- `payment_method` (string) **required**
  The `id` of an existing `PaymentMethod`.

- `return_url` (string) **required**
  The URL your customer will be directed to after they complete authentication.

### Confirm with existing payment method

```js
stripe
  .confirmGrabPayPayment('{PAYMENT_INTENT_CLIENT_SECRET}', {
    payment_method: '{PAYMENT_METHOD_ID}',
    // Return URL where the customer should be redirected after
    // the authorization.
    return_url: "https://example.com/checkout/complete",
  })
  .then(function(result) {
    if (result.error) {
      // Inform the customer that there was an error.
    }
  });
```

```es_next
const {error} = await stripe.confirmGrabPayPayment(
  '{PAYMENT_INTENT_CLIENT_SECRET}',
  {
    payment_method: '{PAYMENT_METHOD_ID}',
    // Return URL where the customer should be redirected after the
    // authorization.
    return_url: "https://example.com/checkout/complete",
  },
);
```

### Use case: with an attached PaymentMethod

If you have already attached a `PaymentMethod` to this `PaymentIntent`, you can then
confirm the `PaymentIntent` using `stripe.confirmGrabPayPayment` without passing in
any additional data.

### Data argument properties

- `return_url` (string) **required**
  The URL your customer will be directed to after they complete authentication.

### Confirm with an attached PaymentMethod

```js
stripe
  .confirmGrabPayPayment('{PAYMENT_INTENT_CLIENT_SECRET}', {
    // Return URL where the customer should be redirected after
    // the authorization.
    return_url: "https://example.com/checkout/complete",
  })
  .then(function(result) {
    if (result.error) {
      // Inform the customer that there was an error.
    }
  });
```

```es_next
const {error} = await stripe.confirmGrabPayPayment(
  '{PAYMENT_INTENT_CLIENT_SECRET}',
  {
    // Return URL where the customer should be redirected after
    // the authorization.
    return_url: "https://example.com/checkout/complete",
  },
);
```

### Confirm a GrabPay payment

```js
stripe
  .confirmGrabPayPayment('{PAYMENT_INTENT_CLIENT_SECRET}', {
    // Return URL where the customer should be redirected after
    // the authorization.
    return_url: "https://example.com/checkout/complete",
  })
  .then(function(result) {
    if (result.error) {
      // Inform the customer that there was an error.
    }
  });
```

```es_next
const {error} = await stripe.confirmGrabPayPayment(
  '{PAYMENT_INTENT_CLIENT_SECRET}',
  {
    // Return URL where the customer should be redirected after
    // the authorization.
    return_url: "https://example.com/checkout/complete",
  },
);
```