validation.md

Server-side Validation Discussion

1. What is server-side validation?
2. How can server-side validation help prevent security vulnerabilities?
3. What is the role of client-side validation?
4. If we have client-side validation, why do we even need a server-side validation?
5. How does the express-validator package simplify server-side validation in Node.js applications?

1. Server-side validation is a process that checks the validity of user input on the server.
2. with validation we enforce the user to input a valid data, and prevent him form input string instead number for example.
3. client-side validation check the validity of the user input in the client side without communicating with the server(email typography validation for example).
4. with server side validation we wrote the validation rules in one place for all the clients (web browser, mobile)
5. we don't know :)

@MuhammedHasan