how to set additional header data when we submit the form ?

[amarezenebe]

i want to set additional header data when i submit the form
// method: 'POST',
mode: 'cors',
headers: {
'Content-Type': 'application/json',
'x-csrftoken': csrfcookie()
}
credentials: 'include',

[ciscoheat]

Superforms uses the SubmitFunction from SvelteKit in onSubmit, so I don't think this is possible. Extra data can be sent with formData or in the action URL instead.