Form Handling
Complex

Advanced Form Validation with Real-Time Feedback

Implement enterprise-grade form validation for a login form with real-time feedback, strict TypeScript typing, and accessibility compliance. Vue uses v-model with watchers for real-time validation; React uses controlled components with useEffect. Both implementations include: - Email format validation (RFC 5322 compliant regex) - Password strength validation (8+ chars, 1 uppercase, 1 number, 1 special char) - Form submission guard (disable button until valid) - Accessible error messages (ARIA attributes) Use cases: Login/registration forms, user profile update forms.

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