Node.js Beyond The Basics Pdf Today

Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine that allows developers to create scalable and high-performance server-side applications. Node.js provides an event-driven, non-blocking I/O model that makes it lightweight and efficient.

passport.use(new LocalStrategy((username, password, done) => { // Verify user credentials if (username === 'john' && password === 'password') { return done(null, { username: 'john' }); } else { return done(null, false); } }));

const assert = require('assert'); const greet = require('./greet');

describe('Greet function', () => { it('should greet a person', () => { assert.strictEqual(greet('John'), 'Hello, John!'); }); }); node.js beyond the basics pdf

// Creating a module // greet.js module.exports = function greet(name) { console.log(`Hello, ${name}!`); };

Node.js applications can be deployed to various platforms, including Heroku, AWS, and Google Cloud.

passport.deserializeUser((username, done) => { done(null, { username }); }); passport

const passport = require('passport'); const LocalStrategy = require('passport-local').Strategy;

const express = require('express'); const app = express();

Node.js is built around asynchronous programming using callbacks, promises, and async/await. Understanding how to work with asynchronous code is crucial for building efficient and scalable applications. { username })

app.get('/users', (req, res) => { res.json([{ name: 'John', age: 30 }, { name: 'Jane', age: 25 }]); });

const User = mongoose.model('User', userSchema);

const mongoose = require('mongoose'); mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true });