Learn back-end development with Node.js, covering HTTP servers, databases, JWT, WebSockets, and more. Consolidate your skills in a capstone project by building a RESTful API for a practical use case.

nodegui.tar.gz

Without_start_script

With_start_script

cookingProcess

writeFileExample

fileProcessor

fileTask

dynamicServer

directoryManager

axios

expressjs

axios_http

dotenv

lodash

nodemon

postgres

postgres-api

postgres-exercise

bcrypt

complete_authentication

websocket-server

math-jest

async-jest

npm-intro-exercise

babel

process_env

process_dotenv

process_lifecycle

Without_start_script-debug

babel-copy

This Node.js course offers a structured path to mastering back-end development. It begins with introducing Node.js and JavaScript in the server-side context, covering modules and foundational concepts. You’ll explore asynchronous programming with callbacks, Promises, async/await, and the event loop, followed by event-driven programming with the EventEmitter class. Practical skills include file system operations, working with buffers, and using streams for efficient data handling.

The course will then guide you through building HTTP servers, implementing routing, handling GET/POST requests, and integrating PostgreSQL for database-driven APIs. Additional topics include JWT-based authentication, WebSockets for real-time features like chat systems and live dashboards, and testing with Jest.

In the capstone project, you’ll build a RESTful API that stores arbitrary JSON data and enables filtering and retrieval in JSON, HTML, or CSV formats, enhancing your skills in building scalable back-end solutions.

Learn Node.js

Add `"start": "node index.js"` to the scripts section in `package.json`.

Set `"main": "index.js"` in `package.json`.

Use the `npm` command without adding anything to `package.json`.

Add `"type": "module"` to `package.json`.

How can we configure npm to run the application using the command `npm start`?

How can we configure npm to run the application using the command <code>npm start</code>?

`node_modules` contains all installed dependencies for a project.

`package-lock.json` ensures identical dependency versions across environments.

Deleting `package-lock.json` has no impact on dependency versions.

Deleting `node_modules` and running `npm install` recreates the dependencies.

**(Select all that apply.)** Which statements about `node_modules` and `package-lock.json` are true?

(Select all that apply.) Which statements about <code>node_modules</code> and <code>package-lock.json</code> are true?

Which command updates dependencies to the latest version allowed by `package.json`?

Which command updates dependencies to the latest version allowed by <code>package.json</code>?

```javascript
import fs from 'fs';
console.log(fs.readFileSync('./data.txt', 'utf8'));
```

```javascript
const { readFileSync } = require('fs');
console.log(readFileSync('./data.txt', 'utf8'));
```

```javascript
export default function greet(name) {
  console.log(`Hello, ${name}!`);
}
```

```javascript
const greet = (name) => {
  console.log(`Hello, ${name}!`);
};
module.exports = greet;
```

**(Select all that apply.)** Which  code snippets will throw an error when executed in a Node.js project configured with `"type": "module"` in `package.json`?

(Select all that apply.) Which code snippets will throw an error when executed in a Node.js project configured with <code>&quot;type&quot;: &quot;module&quot;</code> in <code>package.json</code>?

Loading a database library only when a query needs to be executed.

Importing utility functions at the start of the program.

Migrating CommonJS libraries to ES6 modules.

Importing core Node.js modules like `fs` or `path`.

Which scenario is a good use case for `dynamic import()` in ES6?

Which scenario is a good use case for <code>dynamic import()</code> in ES6?

Test your understanding of npm and package management in Node.js with this comprehensive quiz.

Getting Started with Node.js

Global Objects and Modules

Asynchronous Programming

Event-Driven Programming

Core Node.js Modules

Building a Basic Web Server

npm and Package Management

Working with Databases

Advanced Topics

Wrap Up

Appendix

Building a RESTful API with Node.js and PostgreSQL

Quiz: npm and Package Management