README.md

express-project-03-route-params-api

A simple Express.js backend project demonstrating how to use route parameters in an API.

Concept

This project shows how dynamic route parameters work in Express.js using the following pattern:

/users/:id

The id is captured from the URL and accessed using:

req.params.id

Tech Stack

• Node.js
• Express.js

Project Structure

express-project-03-route-params-api
│
├─ src
│  ├─ controllers
│  │  └─ user.controller.js
│  │
│  └─ routes
│     └─ user.routes.js
│
├─ index.js
├─ package.json
└─ .gitignore

Installation

Clone the repository

git clone https://github.com/a2rp/express-project-03-route-params-api.git
cd express-project-03-route-params-api

Install dependencies

npm install

Run the Server

node index.js

Server runs at:

http://localhost:3000

API Endpoint

Get User by ID

GET /users/:id

Example:

http://localhost:3000/users/25

Response:

{
    "id": "25",
    "name": "User 25",
    "message": "User data fetched successfully for id 25"
}

Learning Outcome

This project demonstrates:

• Express route parameters
• Dynamic API routes
• Controllers and route separation
• Basic backend architecture

Author

Ashish Ranjan

---

Follow me:

• GitHub: https://github.com/a2rp
• Portfolio: https://www.ashishranjan.net
• LinkedIn: https://www.linkedin.com/in/aashishranjan
• Facebook: https://www.facebook.com/theash.ashish/