Покажи код
regUserBtn.addEventListener('click', function (event) {
event.preventDefault();
const regForm = document.forms.regForm;
var formData = getRegFormData(regForm);
let response = fetch('/index/register', {
method: 'POST',
body: formData,
})
.then(response => {
response.json();
});
response.then(result => {console.log(result)})
});
function getRegFormData(regForm) {
var formData = new FormData();
formData.append('email', regForm.email.value);
formData.append('firstName', regForm.firstName.value);
formData.append('secondName', regForm.secondName.value);
formData.append('password', regForm.password.value);
return formData;
}