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Node.js for Beginners

Node.js for Beginners

By : Ulises Gascón
4.8 (5)
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Node.js for Beginners

Node.js for Beginners

4.8 (5)
By: Ulises Gascón

Overview of this book

Node.js revolutionizes server-side JavaScript development and empowers developers to build efficient, scalable, and versatile applications across a range of use cases. This book is written by a Node.js core collaborator and releaser and is the only book for beginners on Node.js. It takes you on a progressive learning path that will give you the skills needed to leverage Node.js. You’ll learn Node.js fundamentals and refresh your knowledge of JavaScript before transitioning to the development of modern web applications using Node.js, Express.js, and MongoDB. You’ll get hands-on with complex topics such as asynchronous programming, npm libraries, event-driven patterns for HTTP servers, RESTful API, and JSON Web Tokens. The final chapters will walk you through the deployment process, offering insights into various strategies, including bare metal setups, virtual machines, and containerization with Docker. You’ll also be guided through the use of Process Manager 2 (PM2) for efficient process management. By the end of this Node.js book, you'll have the skills to craft, test, and deploy Node.js web applications confidently and use this powerful stack in your day-to-day projects.
Table of Contents (25 chapters)
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1
Part 1: Node.js Overview and JavaScript Language
6
Part 2: Node.js Ecosystem and Architecture
11
Part 3: Web Application Fundamentals
14
Part 4: Building Solid Web Applications with Node.js
20
Part 5: Mastering Node.js Deployment and Portability

Exploring the types of errors

As we learned in the first chapter, Node.js is a single-threaded application. This means that if an error occurs and we don’t properly handle it, the application will crash. This is why it is important to handle errors properly.

There are two main types of errors in Node.js: syntax errors and runtime errors.

Syntax errors

Syntax errors are thrown when the code is parsed and it is not valid. These errors are thrown by the JavaScript engine, and they are usually easy to fix. Many IDEs and code editors can detect these errors and highlight them in the code editor, so you can fix them before running the application. In our case, we have been using StandardJS as a linter (which is a tool that helps us detect syntax errors and enforce a consistent code style) in previous chapters.

This is an example of a syntax error:

executeThisFunction()

The previous code will throw a ReferenceError error because the executeThisFunction function is...

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Node.js for Beginners
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