A CSP is an HTTP header that provides an extra layer of security against code-injection attacks, such as cross-site scripting (XSS), clickjacking, and other similar exploits. It facilitates the creation of an "allowli...

__dirname is an environment variable that tells you the absolute path of the directory containing the currently executing file. In this article, you will explore how to implement __dirname in your Node.js project.

It's common for a modern JavaScript application to communicate with other servers to accomplish a task. In this article, you will use the https Node.js module to make HTTP requests to a web API, including GET, POST, P...

Use Node.js and the node-cron library to schedule jobs to manage logs, back up databases, and send emails.

With Node.js, you can use JavaScript to programmatically manipulate files with the built-in fs module. The name is short for "file system," and the module contains all the functions you need to read, write, and delete...

In this tutorial, you will use Node.JS, Puppeteer, Docker, and Kubernetes to build a highly scalable scraper that can simultaneously extract data from multiple pages. You will test your scraper on the dummy bookstore,...

In this tutorial, you will build a web scraping application using Node.js and Puppeteer. Your app will grow in complexity as you progress. First, you will code your app to open Chromium and load a special website desi...

In Node.js, you need to restart the process to make changes take effect. This adds an extra step to your workflow to have the changes take place. You can eliminate this extra step by using nodemon to restart the proce...

Node.js is a JavaScript platform for general-purpose programming that allows users to build network applications quickly. In this guide, we'll show you how to get started with Node.js on an Ubuntu 18.04 server.

Since Node.js instances create a single process with a single thread, JavaScript operations that take a long time to run can sometimes block the execution of other code. A key strategy to work around this problem is t...

Discord is a chat application that allows millions of users across the globe to message and voice chat online in communities called guilds or servers. In this tutorial, you will build a Discord bot from scratch, using...

Node.js is an open-source JavaScript runtime environment for building server-side and networking applications. The platform runs on Linux, macOS, FreeBSD, and Windows. Though you can run Node.js applications at the co...

The Docker platform allows developers to package and run applications as containers. A container is an isolated process that runs on a shared operating system, offering a lighter weight alternative to virtual machines...

In this article, you will use a debugger to debug some sample Node.js applications. You will first debug code using the built-in Node.js debugger tool, setting up watchers and breakpoints so you can find the root caus...

Event emitters are objects in Node.js that trigger an event by sending a message to signal that an action was completed. In this article, you will create an event listener for a TicketManager JavaScript class that all...

In this guide, we will show you three different ways of getting Node.js installed on an Ubuntu 20.04 server: using apt to install the nodejs package from Ubuntu's default software repository, using apt with an alterna...

A buffer is a space in memory (typically RAM) that stores binary data. In Node.js, we can access these spaces of memory with the built-in Buffer class. Buffers are useful when using JavaScript to interacting with bina...

GraphQL is a query language created with the purpose of building client applications based on intuitive and flexible syntax for describing their data requirements and interactions. In this tutorial, we are going to im...