Custom Form Builder for React Applications

Building forms in React often starts simple but quickly becomes complex as requirements grow. Validation rules, conditional logic, dynamic fields, and enterprise constraints can turn handcrafted forms into hard-to-maintain code. SurveyJS provides a custom form builder for React applications that solves these challenges by enabling dynamic, schema-driven forms while keeping developers fully in control.

Built for Developers Who Need Dynamic Forms in React

SurveyJS is designed for developers building applications where forms are not static. Instead of hardcoding inputs and rules, forms are defined as JSON and rendered dynamically at runtime.

SurveyJS is a good fit for teams that:

• Build dynamic forms that change frequently
• Need a custom form builder embedded into their own React applications
• Want a developer-first solution without SaaS lock-in or hosted data storage

Because SurveyJS is delivered as JavaScript libraries, it integrates directly into your codebase and development workflow.

Build Dynamic Forms from JSON Schemas

SurveyJS uses a JSON schema to describe the structure and behavior of a form. This schema defines questions, layouts, validation rules, and logic in a clear, structured format.

With SurveyJS, you can:

• Create reusable schemas shared across applications
• Store schemas in your own database (Learn more about Backend integration)
• Generate forms at runtime using SurveyJS form rendering component
• Update forms without redeploying your React app

Because the schema is platform-agnostic, the same form definition can be reused with different front-end frameworks while preserving consistent behavior. SurveyJS offers dedicated npm packages for Angular, React, Vue, and VanillaJS.

Designed for Modern React Applications

SurveyJS provides dedicated React components that integrate cleanly into modern React applications. Forms are rendered as part of your component tree and work naturally with existing layouts and routing.

Key integration benefits include:

• Compatibility with React hooks and modern state patterns
• Smooth behaviour in single-page applications (SPAs)
• A framework-agnostic core that separates form logic from the UI layer (Learn more about SurveyJS architecture)

This architecture allows SurveyJS forms to remain portable and maintainable over time.

Advanced Logic and Validation Without Hardcoding

One of SurveyJS’s strengths is its ability to handle complex form logic declaratively. Instead of writing conditional logic in React components, rules are defined directly in the schema like so:

json

[
  ...,
{
    "name": "textlengthvalidator",
    "type": "comment",
    "title": "Text Length Validator",
    "description": "Enter text no shorter than 10 and no longer than 280 symbols",
    "isRequired": true,
    "validators": [{
      "type": "text",
      "minLength": 10,
      "maxLength": 280
    }]
  },
...
]

SurveyJS offers a GUI for configuring form logic and supports:

• Conditional logic for dynamic visibility
• Built-in validation
• Support for custom client-side validation rules
• Calculated fields and expressions
• Cross-field dependencies using expression syntax

By centralizing logic in the schema, SurveyJS reduces code complexity and improves consistency across forms.

Fully Customizable and White-Label

SurveyJS is designed to be fully integrated and customized. It offers white-label usage and does not impose SurveyJS branding or fixed UI constraints, making it suitable for white-label products.

Customization options allow developers to:

• Create custom fields and question types
• Extend functionality with custom widgets (This example shows how to integrate a 3rd-rarty rich content editor)
• Localize the form builder UI to any language
• Integrate forms into existing design systems and apply full UI theming using custom CSS

This flexibility makes SurveyJS suitable for both internal tools and customer-facing applications.

You Stay in Control of Your Data

SurveyJS is a self-hosted solution. It does not collect, store, or process user data on your behalf.

With SurveyJS:

• All form data stays in your application
• You control backend integration and data flow
• There is no built-in or external data storage

This approach is especially important for organizations with strict security, privacy, or compliance needs.

The team offer several examples to help you integrate SurveyJS components with your backend system. Examples are available for PHP, ASP.NET, and Node.js.

How SurveyJS Compares to Other React Form Builders

Many React form solutions focus on managing form state and validation at the component level. While effective for simple use cases, these tools often require significant custom code for dynamic or schema-driven forms.

Compared to typical alternatives:

• SurveyJS provides a schema-based form builder, not just a form library
• Business logic lives in configuration rather than React code
• It scales better for complex and evolving requirements

For teams looking for an open-source, dynamic, and scalable form solution SurveyJS offers a balance: a developer-friendly open-source architecture with enterprise-ready capabilities, making it a strong enterprise form builder for React applications.