Input Validation with Joi/Express-Validator
Validate incoming request data using powerful libraries like Joi or express-validator to ensure data integrity.
Why Validate Inputs?
Input validation is a critical security and data integrity practice. It ensures that data received by your application is clean, correct, and safe to process.
Without proper validation, your application becomes vulnerable to:
- Security breaches: Like SQL injection or Cross-Site Scripting (XSS).
- Data corruption: Malformed data can break your application or database.
- Poor user experience: Inconsistent data leads to bugs and unexpected behavior.
Unvalidated Data: A Security Risk
Imagine a user submitting a form without validation. They could send:
- Empty fields: Required information is missing.
- Incorrect data types: A number field receives text.
- Malicious scripts: Code designed to exploit your system.
Validation acts as a gatekeeper, preventing bad data from entering your application's core.
All lessons in this course
- Developing Custom Express Middleware
- Global Error Handling Strategies
- Input Validation with Joi/Express-Validator
- Authentication Middleware with JWT