Forms - Form Validation
Overview
Form Validation ensures that user input meets specified criteria before submission. Display clear error messages and prevent invalid data.
Features
Validation Types
- Required fields
- Email format
- Number ranges
- Pattern matching
- Custom rules
Error Display
- Inline error messages
- Error summary
- Field highlighting
- Real-time validation
Validation States
- Valid (green)
- Invalid (red)
- Warning (yellow)
- Disabled
Quick Reference
| Rule | Description |
|---|---|
| Required | Field cannot be empty |
| Valid email format | |
| Min/Max | Value range |
| Pattern | Regex validation |