What are the best practices for validation in Node.js?

What are the best practices for validation in Node.js?

Some best practices include using libraries like Joi or express-validator, validating data at the API level, and ensuring proper error handling.

Can you explain how to use Joi for validation?

Sure! Joi allows you to define a schema for your data and validate it against that schema. You can create rules for each field, like required, min, max, etc.

What are the advantages of using a validation library?

Using a validation library helps maintain clean code, reduces redundancy, and provides built-in error messages, making your API more robust.

How do I handle validation errors in my application?

You can catch validation errors in your middleware and return a structured response to the client, indicating what went wrong.