π
MODULE 11Intermediate β Advanced
React Hook Form + Zod
React Hook Form provides performant, flexible forms with minimal re-renders. Zod provides TypeScript-first schema validation. Together they're the gold standard for type-safe form handling in React.
react-hook-formzod@hookform/resolversuseFieldArrayzodResolver
Why React Hook Form?
π Performance
Uncontrolled inputs by default β no re-render on every keystroke. Only re-renders when errors change.
π· Type Safety
Full TypeScript support. Zod schema infers your form type β no duplicate type definitions.
β‘ DX
One hook call sets up registration, validation, errors, and submit handling. Works with any UI library.
1. Registration Form
useForm Β· zodResolver Β· formState Β· cross-field validation
Registration Form
Full registration form with Zod schema validation, cross-field validation (password match), and real-time error feedback.
Zod SchemaTypeScript
// 1. Define Zod schema
const loginSchema = z.object({
email: z.string().email('Invalid email'),
password: z.string().min(8, 'Min 8 chars'),
})
// 2. Infer TypeScript type
type LoginForm = z.infer<typeof loginSchema>Zod Quick Reference
z.string()string
z.number()number
z.boolean()boolean
z.date()Date
z.enum([β¦])'a'|'b'|β¦
z.array(schema)T[]
z.object({β¦})shape
.optional()T | undefined
.nullable()T | null
.default(val)uses val if undefined
.transform(fn)T β U
.refine(fn, msg)custom validation
z.infer<typeof s>extract TS type