0x05-Node_JS_basic

NodeJS Basics Project

Overview

This project explores the foundational concepts of Node.js, focusing on practical tasks that demonstrate the use of core Node.js features, Express.js, and related tools. The project covers executing JavaScript in Node.js, handling HTTP requests, reading files, and setting up a small HTTP server, both with Node's HTTP module and Express.

Learning Objectives

By the end of this project, you should be able to:

• Run JavaScript using Node.js.
• Utilize Node.js modules effectively.
• Read files using specific Node.js modules.
• Access command line arguments and environment variables using the process object.
• Create HTTP servers using both Node.js and Express.
• Implement advanced routing with Express.
• Use ES6 features in Node.js with Babel.
• Develop more efficiently using Nodemon.

Project Structure

The project is organized into multiple tasks, each focusing on a specific aspect of Node.js and Express.js:

0. Executing Basic JavaScript with Node.js

File: 0-console.js
A simple function displayMessage is implemented to print a message to the console using Node.js.

1. Using Process stdin

File: 1-stdin.js
A command-line application prompts the user for their name and displays it. The application demonstrates how to handle user input and graceful termination messages.

2. Reading a File Synchronously

File: 2-read_file.js
A function countStudents reads a CSV file synchronously and logs the total number of students and students per field.

3. Reading a File Asynchronously

File: 3-read_file_async.js
This task is similar to the previous one but uses asynchronous file reading to avoid blocking the event loop.

4. Creating a Basic HTTP Server with Node's HTTP Module

File: 4-http.js
A basic HTTP server is set up to respond with "Hello Holberton School!" for any request.

5. Creating a More Complex HTTP Server

File: 5-http.js
The server is extended to handle different routes, including a /students route that displays student information from a CSV file.

6. Creating a Basic HTTP Server with Express

File: 6-http_express.js
An Express.js server is set up, responding with "Hello Holberton School!" at the root endpoint.

7. Creating a More Complex HTTP Server with Express

File: 7-http_express.js
The Express server handles multiple routes, including a dynamic route for displaying students by major.

8. Organizing a Complex HTTP Server

Directory: full_server/
A full-fledged server setup using Express, with organized directories for controllers and routes. It includes:

• Controllers: Handles logic for different endpoints.
  • AppController.js: Handles the root route.
  • StudentsController.js: Manages routes related to student data.
• Routes: Defines routing logic.
  • index.js: Connects endpoints to their respective controllers.
• Utilities:
  • utils.js: Contains helper functions like readDatabase for reading student data.

Setup and Usage

1. Install Dependencies:

   npm install

2. Running the Server:

   npm run dev

   This command uses nodemon and babel-node to run the server with ES6 support.

3. Testing and Linting:

   • Run tests: npm run test
   • Lint code: npm run lint

Contributing

Please follow the project's coding standards, ensuring that all contributions pass linting and tests.