The HTTP protocol, having been introduced in 1991, is almost 30 years old. It went through quite a journey since the first documented version, later called 0.9. In this article, we briefly go through the history of the development of the HTTP protocol and focus on what HTTP/2 brings and how we can benefit from […]
In this article, we look into how React checks if the view should be updated. We also use the tools like the shouldComponentUpdate lifecycle function, the PureComponent, and the memoization. We start by acquiring a basic understanding of how React works under the hood. It is vital in attempting to improve the React performance. What might […]
The symbol is a new primitive value introduced by ES6. It aims to provide us with unique identifiers. In this article, we explore how it works, in what way it is used in the JavaScript language and how we can benefit from that. Creating symbols To create a symbol, we use its constructor.
1 | const symbol = Symbol(); |
The function […]
In this article, we grasp the very basics of a canvas. We learn every piece of knowledge that is needed to create a simple drawing app that can also save our images and load them back to the editor. The basics of a canvas With the <canvas> element, we can draw images using JavaScript. The above […]
In this article, we cover another feature that we can implement with the help of Service Workers – Push Notifications. They come in handy if we need a fast channel of communicating with our users. We not only learn how to implement them in terms of code, but we also explore the User Experience side […]
In this article, we cover service workers. They aim to solve a particular problem: how should our application behave when we’re offline? A service worker is a script, that runs in the background, separate from our web page and all new major browsers support it. Using the cache mechanism and intercepting the requests are one […]
Today we expand our knowledge to build pages that are more complex and utilize more features from the Next.js framework. In this article, we learn how to fetch initial data for our components on the server side. This way, we can take even more work off the client side. Fetching data First, let’s display some […]
In recent years, the popularity of client-side Single Page Applications skyrocketed, for various reasons. Following its principles, we build pages with the amount of interactivity that we didn’t have before. When using React to render the page the “regular” way, the server sends a blank page and the JavaScript files. By doing that, the browser […]
When writing Node.js code, we can approach tasks in many ways. While all of them might work fine, some perform better than others, and as developers, we should strive to make both easily readable and fast applications. In this article, we learn how to measure the performance of our code using Performance Hooks, also called […]
The Worker Threads give us quite exciting features when compared to, for example, child processes. In this article, we create our instances of the MessageChannel to communicate with the Worker Threads. Aside from that, we also share the data between them: it’s something that is not possible with child processes. Communicating using the MessageChannel There […]