Clear form after submit

Hello,
How to clear the form after successful submission? 

I've been trying to add function like below, but didn't clear the form.
```js
  const emptyForm = () => {
    setNamaLengkap('');
    setNamaPanggilan('');
    setNamaBaptis('');
    setKtp('');
  }
```
```js
<Form className="form" onSubmit={emptyForm}>
...
</Form>
```

Thanks.