validation⏱10 minutes
Get Started with ajv
Quick Summary
“Fast JSON Schema Validator supporting multiple drafts and JSON Type Definition.”
Best for: Applications requiring fast JSON validation
Time to first integration: 10 minutes
📋Prerequisites
- ✓Node.js 18+ installed
- ✓A ajv account — sign up here
- ✓An existing project (Next.js, React, or Node.js recommended)
Setup Steps
3 steps1
1
Install AJV
Use npm to install AJV in your project.
bash
npm install ajv2
2
Create a schema
Define a JSON schema for your data validation.
3
3
Validate data
Use AJV to validate your data against the schema.
typescript
const valid = ajv.validate(schema, data);Common Gotchas
Watch out for these issues in your first week.
AJV error messages can be difficult to interpret.
Fix: Use ajv-errors package to customize error messages.
Custom keyword implementation can be complex.
Fix: Refer to AJV documentation and examples for guidance on custom keywords.
Related Guides
Setting up a full stack? Check out these complementary guides.