https://codingchoice.com/learn/ 2026-05-03T10:37:43+00:00 https://codingchoice.com/learn/ https://codingchoice.com/learn/_media/logo.png text/html 2025-02-19T02:48:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://codingchoice.com/learn/nodejs/asynchronous_programming?rev=1739933335&do=diff Asynchronous Programming in Node.js Using Promises const fetchData = () => { return new Promise((resolve, reject) => { setTimeout(() => resolve("Data fetched"), 2000); }); }; fetchData().then(console.log); Using Async/Await const fetchData = async () => { return "Data fetched"; }; fetchData().then(console.log); text/html 2025-02-19T02:50:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://codingchoice.com/learn/nodejs/building_rest_api?rev=1739933438&do=diff Building a REST API const express = require("express"); const app = express(); app.use(express.json()); let users = [{ id: 1, name: "John Doe" }]; app.get("/users", (req, res) => { res.json(users); }); app.post("/users", (req, res) => { const user = req.body; users.push(user); res.status(201).json(user); }); app.listen(3000, () => console.log("API running on port 3000")); text/html 2025-02-19T02:41:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://codingchoice.com/learn/nodejs/create_web_server?rev=1739932919&do=diff Creating a Simple Web Server Using the HTTP Module const http = require("http"); const server = http.createServer((req, res) => { res.writeHead(200, { "Content-Type": "text/plain" }); res.end("Hello, World!"); }); server.listen(3000, () => { console.log("Server running at http://localhost:3000"); }); text/html 2025-02-19T02:47:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://codingchoice.com/learn/nodejs/databases_in_nodejs?rev=1739933245&do=diff Working with Databases in Node.js Using MongoDB with Mongoose Install Mongoose: npm install mongoose Example connection: const mongoose = require("mongoose"); mongoose.connect("mongodb://localhost:27017/mydb", { useNewUrlParser: true, useUnifiedTopology: true, }); const db = mongoose.connection; db.on("error", console.error.bind(console, "connection error:")); db.once("open", () => { console.log("Connected to MongoDB"); }); text/html 2025-02-19T02:53:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://codingchoice.com/learn/nodejs/deploying_application?rev=1739933631&do=diff Deploying a Node.js Application Using PM2 to Manage Processes Install PM2: npm install -g pm2 Start the server with PM2: pm2 start app.js text/html 2025-02-19T02:44:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://codingchoice.com/learn/nodejs/expressjs?rev=1739933055&do=diff Working with Express.js Installing Express npm install express Creating an Express Server const express = require("express"); const app = express(); app.get("/", (req, res) => { res.send("Welcome to Express.js!"); }); app.listen(3000, () => { console.log("Server running on port 3000"); }); text/html 2025-02-19T02:32:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://codingchoice.com/learn/nodejs/first_application?rev=1739932375&do=diff Your First Node.js Application Writing a Simple Hello World Script Create a file app.js and add the following code: console.log("Hello, Node.js!"); Run the script using: node app.js Using REPL (Read-Eval-Print Loop) You can also execute JavaScript directly in the Node.js interactive shell: text/html 2025-02-19T02:30:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://codingchoice.com/learn/nodejs/getting_started?rev=1739932217&do=diff Getting Started Installation Download and install Node.js from the official website: <https://nodejs.org/> Alternatively, install Node.js using a package manager: Windows choco install nodejs macOS brew install node Linux sudo apt install nodejs npm Verifying Installation text/html 2025-02-19T03:01:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://codingchoice.com/learn/nodejs/introduction?rev=1739934118&do=diff Introduction to NodeJs What is Node.js? Node.js is a runtime environment that allows you to execute JavaScript code outside of a browser. Built on the V8 JavaScript engine, it enables developers to build scalable and high-performance applications, particularly for backend development. text/html 2025-02-19T02:36:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://codingchoice.com/learn/nodejs/modules_in_nodejs?rev=1739932618&do=diff Modules in Node.js Built-in Modules Node.js comes with several built-in modules like fs, http, path, and os. Example using the fs module to read a file: const fs = require("fs"); fs.readFile("example.txt", "utf8", (err, data) => { if (err) { console.error(err); return; } console.log(data); }); text/html 2025-02-19T02:56:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://codingchoice.com/learn/nodejs/sidebar?rev=1739933780&do=diff * Introduction * Getting Started * First Application * Modules in NodeJs * Create Web Server * ExpressJs * Databases in NodeJs * Asynchronous Programming * Building REST API * WebSockets * Deploying Application text/html 2025-02-19T02:52:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://codingchoice.com/learn/nodejs/websockets?rev=1739933532&do=diff WebSockets with Socket.io Install Socket.io: npm install socket.io Example usage: const io = require("socket.io")(3000); io.on("connection", socket => { console.log("New user connected"); socket.on("message", msg => { console.log("Message received: " + msg); }); });