Survey-library

SurveyJS is a powerful TypeScript-based form builder that lets developers create complex surveys, questionnaires, and data collection forms using simple JSON schemas. Instead of manually coding form markup and validation logic, you define your form structure declaratively and let SurveyJS handle rendering, state management, and user interactions across multiple frameworks.

The library excels at building dynamic forms where questions can change based on user responses, making it ideal for conditional logic workflows, multi-step wizards, and adaptive questionnaires. With built-in support for 20+ question types, skip logic, validation rules, and piping, you can create sophisticated data collection experiences without reinventing the wheel.

What sets SurveyJS apart is its true framework-agnostic architecture. Whether your team uses React, Angular, Vue 3, jQuery, or Knockout, you write your form definition once and deploy it anywhere. The same JSON schema works across all platforms, making it perfect for teams with diverse tech stacks or projects transitioning between frameworks.

The library includes a visual form designer, extensive theming capabilities, and export options for PDF and analytics. It handles complex scenarios like matrix questions, file uploads, and custom widgets while maintaining a clean, accessible UI that works on mobile and desktop devices.