How to Implement Form Validation in Node.js and Express Using Express-Validator
How to Implement Form Validation in Node.js and Express Using Express-Validator Handling user input safely is one of the most critical responsibilities of backend development. Accepting unvalidated data can lead to corrupted databases, broken application states, and severe security vulnerabilities like injection attacks. In this tutorial, we will walk through how to build robust form validation in a Node.js application using Express, EJS, Body-Parser, and the express-validator library . Prerequisites & Tech Stack Make sure you have Node.js installed on your system. We will be using the following packages: Express: Fast, unopinionated web framework for building Node.js applications. Body-Parser: Middleware to extract incoming request data and expose it on req.body . Path: Built-in Node.js module for working with file and directory paths. Express-Validator: A set of Express middlewa...