Introduction to Pug Pug is a template engine designed for server-side Node.js applications. It allows developers to add dynamic data to views and generate HTML. Formerly known as Jade 2.0, the project changed its name to Pug in 2016 due to a trademark issue. While the older version (Jade 1.0) is still usable, it is recommended to use the latest version (Pug 2.0). Learn more about the differences between Jade and Pug....
In the package.json file of some Node modules, you might come across a field called peerDependencies. While you may be familiar with dependencies and devDependencies, peerDependencies is slightly different. Dependencies: These are the packages that your project relies on. DevDependencies: These are the packages that are necessary during the development phase, such as testing frameworks like Jest or utilities like Babel or ESLint. When you install a package using npm, both the dependencies and devDependencies are automatically installed....
The Event Loop is a fundamental concept to understand in Node.js. It explains how Node can be asynchronous and have non-blocking I/O, which is what makes it so successful. Node.js code runs on a single thread, meaning that only one thing can happen at a time. While this may seem like a limitation, it simplifies programming by eliminating the need to worry about concurrency issues. However, it is important to be mindful of how you write your code to avoid blocking the thread....
When it comes to optimizing images in Node.js scripts, my go-to choice is usually the sharp library. However, there are instances where I prefer using the ImageOptim macOS application with its intuitive graphical user interface (GUI). Recently, I had the need to invoke the ImageOptim app from a Node.js script, and I’d like to share how I accomplished this. To begin, I imported the child_process module, which is a built-in module in Node....
This blog post is part of the Johnny Five series. If you haven’t read the first post yet, you can find it here. In this post, we will explore how to receive data from an electronic device using Johnny Five. Specifically, we will use a water level sensor to monitor the level of coffee in a cup. This will help us determine if we need to refill our cup to sustain our programming endeavors....
WebSockets have emerged as an alternative to traditional HTTP communication in web applications, offering a long-lived, bidirectional channel for communication between clients and servers. Unlike HTTP, which follows a request/response protocol, WebSockets allow the server to send messages to the client without the client explicitly requesting them. Additionally, both the client and server can communicate with each other simultaneously, resulting in low latency and minimal data overhead. WebSockets are supported by all modern browsers, making them an excellent choice for real-time and long-lived communications....
Web Scraping is a technique used to download web pages and extract specific information from them. In this tutorial, we will explore web scraping using Node.js and Puppeteer, a powerful headless browser library developed by Google. Introduction to Puppeteer Puppeteer is a Node.js library that allows us to programmatically control a headless Chrome browser. With Puppeteer, we can perform various tasks, including automated testing, taking screenshots, generating server-side rendered versions of single-page applications, and more....
When it comes to integrating different services in your code, utilizing webhooks is a common practice. But what exactly is a webhook? A webhook is essentially a POST request handler that awaits a call and performs a specific task once triggered. Here’s an example to illustrate how webhooks work. Let’s say I use Paddle as a platform to sell my Bootcamp course on bootcamp.dev. Every time someone signs up for the course, my webhook is called, providing me with JSON data that includes the customer’s email, name, and the purchased product....
When it comes to hosting a Node.js application, there are plenty of options available to suit your needs. In this article, we will explore various hosting solutions so that you can choose the one that best fits your requirements. From simple and constrained options to more complex and powerful ones, we will cover them all. Simplest Option Ever: Local Tunnel If you want to quickly test your app, demo a product, or share it with a small group of people, you can deploy your app and serve requests right from your computer using a local tunnel....
When deciding on the best technology for your next project, there are countless alternatives to Node.js to consider. However, Node.js stands out as a compelling choice for a number of reasons. In this blog post, we will explore the benefits of using Node.js and why it may be the right solution for you. Node.js - Powered by JavaScript JavaScript is undoubtedly one of the most popular programming languages globally. Its ability to run within a web browser gives it a distinct advantage over other languages....