What is Form Validation?

Form validation defines rules and feedback to ensure user inputs are complete, correct, and secure.

When to use Form Validation?

- Any form that persists data or triggers important actions

- To prevent errors early with inline feedbackWhen not to rely solely on Validation? - When server‑side checks are required for security or business rulesWhat is the anatomy of Form Validation?

- Constraints, required fields, and patterns

- Inline and summary errors

- Accessible labels, hints, and success states