What's the main issue with this form validation implementation according to the KISS principle?
function validateForm(formData) {
const errors = {};
// Email validation
if (formData.email) {
const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
if (!emailRegex.test(formData.email)) {
errors.email = 'Invalid email format';
} else {
const [localPart, domain] = formData.email.split('@');
if (localPart.length > 64 || domain.length > 255) {
errors.email = 'Email parts too long';
} else if (domain.split('.').some(part => part.length > 63)) {
errors.email = 'Domain parts too long';
}
}
} else {
errors.email = 'Email is required';
}
return Object.keys(errors).length === 0;
}
This code violates the KISS principle by implementing overly complex email validation logic. While technically accurate, it's more complex than necessary for most use cases. A simpler approach would be:
function validateForm(formData) {
const errors = {};
if (!formData.email) {
errors.email = 'Email is required';
} else if (!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(formData.email)) {
errors.email = 'Invalid email format';
}
return errors;
}
This implementation:
1. Is easier to understand and maintain
2. Covers most common email validation needs
3. Returns meaningful error messages
4. Follows the KISS principle by keeping the validation simple and straightforward