FieldCheck Validator
Real-time Form FieldCheck Validation
Simple JS Form FieldCheck Validator
A lightweight JavaScript plugin for instant form validation. Improve user experience with real-time feedback and elegant animations.
Required Fields
Email Validation
Phone Numbers
Custom Regex
Core Features
Instant Feedback
Inline error messages directly next to the field with smooth fade-in animations. Green-marked fields for correct input.
Custom Validation
Custom rules for inputs using regex. Password strength, zip codes, credit card formats - everything is possible.
Theming & Dark Mode
Colors, font sizes, and icons customizable via CSS variables. Full light and dark mode support.