TanStack Form - Simple Form Validation
Build reactive forms with real-time validation, type safety, and minimal boilerplate using TanStack Form
What is this?
TanStack Form provides a powerful, type-safe form management solution with built-in validation, error handling, and real-time field updates. This showcase demonstrates basic form setup with Zod validation rules and custom form components.
Why use this?
- Minimal boilerplate compared to traditional form libraries
- Type-safe form values and validation with TypeScript and Zod
- Real-time validation feedback as users type or blur fields
- Framework-agnostic core that works with React, Vue, Solid, and more
- Excellent performance with granular field-level updates
- Flexible validation - validate on blur, change, or submit
Implementation Details
1. Define Validation Schema
Use Zod to create a type-safe validation schema for your form fields.
2. Initialize Form with Hook
Use the custom useAppForm hook to set up form state, default values, and validation.
3. Render Form Fields
Use the form's AppField component to create type-safe field instances with validation.
4. Custom Field Components
TanStack Form integrates with your custom components via context for flexible, reusable fields.
Key Concepts
Field-Level Validation
Each field validates independently when the user interacts with it (on blur), providing immediate feedback without validating the entire form.
Type Safety
TypeScript and Zod work together to ensure your form values match your schema, catching errors at compile time and runtime.
Granular Updates
Only the components that depend on changed values re-render, not the entire form, ensuring optimal performance even with complex forms.
Flexible Validation Timing
Choose when to validate: onBlur (after leaving field), onChange (while typing), or onSubmit (only when submitting the form).
Related Projects
Related project: forms-address-form
Note: Related project cards will be populated from the registry