CategoryJavaScript

June 2, 2022 — In this tutorial, you will learn how to create a group chat app. You will build a backend app using Node.js that will make group chats, authorize chat participants, and maintain sessions for them. The front-end will be built using Vanilla JS, HTML and CSS. It will allow users to log in, make new groups, invite friends, and trade messages. By the end, you should have a working app where multiple participants can send messages in one group. Read more…

May 25, 2022 — One of the most important aspects of software development, are memory and performance management and every software developer should pay attention to them. In this article, Frank Joseph explains both weak and strong references in JavaScript, as well as the concept of reachability. Let’s dig in! Read more…

May 20, 2022 — When it comes to tools for publishing a blog, it can seem like there’s never a perfect solution that mixes customization with easy admin. In this article, we will see step-by-step how you can get the best of both worlds by using Ghost as a headless CMS for a Gatsby static site. We will cover all the tricky parts in-depth and show you can do everything for free. Read more…

May 16, 2022 — What makes the underused Server-Timing header uniquely powerful among all other response headers? We’ll rethink the expectation for using it exclusively for timing and see fast solutions for hard-to-solve monitoring challenges. In this article, Sean Roberts will provide you with a new perspective on Server-Timing as a tool to reach for, even if you’re not measuring time. Read more…

May 12, 2022 — Google collects performance information from millions of opted-in Chrome browsers around the world and uses this information as a performance ranking factor for its search engine. But it also makes this information freely available so that anyone can use it to check the real-world performance of individual websites. Even more significantly, it’s possible to segment this data according to the technologies used in the websites. In this article, Dan Shappir leverages this information to analyze and compare the performance of leading JavaScript frameworks. Along the way, he uncovers unexpected behaviors and solves a web performance mystery. Read more…

April 29, 2022 — Performance needs to be built in starting at the code level, and user-centric metrics like time to interactive (TTI), total blocking time (TBT), and first input delay (FID) help you gauge how fast a website is. But modern web pages are heavy and ever-growing in size Introducing Partytown, a lightweight open-source solution that reduces execution delays due to third-party JavaScript by offloading third-party scripts to web workers, which run in background threads. Read more…

April 28, 2022 — In this article, Nathan Smith explains how to create modal dialog windows with rich interaction that will only require authoring HTML in order to be used. They are based on Web Components that are currently supported by every major browser. Read more…

April 19, 2022 — In this article, Ekene Eze shares his thoughts about the direction of the web in 2022, and what solutions we can expect to see come up in the ecosystem to significantly improve the Jamstack experience. Read more…

April 11, 2022 — Loading experience is crucial to the user’s first impression and overall usability, so Google defined Largest Contentful Paint (LCP) metric to measure how quickly the main content loads and is displayed to the user. This new attribute will enable us to fine-tune relative resource priority, improve LCP performance, deprioritize JavaScript fetch calls, and much more. Let’s check out fetchpriority and explore some potential use cases. Read more…

April 8, 2022 — Data is among the most important things that make up a web application or a conventional native app. We need data to be able to see and perhaps understand the purpose of an application. In this article, we’ll look at another approach to obtaining data in an application that requires authentication or authorization using Next.js. Read more…