CategoryJavaScript

July 21, 2025 — Event listeners are essential for interactivity in JavaScript, but they can quietly cause memory leaks if not removed properly. And what if your event listener needs parameters? That’s where things get interesting. Amejimaobari Ollornwi shares which JavaScript features make handling parameters with event handlers both possible and well-supported. Read more…

June 11, 2025 — In this tutorial, Blake Lundquist walks us through two methods of creating the “moving-highlight” navigation pattern using only plain JavaScript and CSS. The first technique uses the getBoundingClientRect method to explicitly animate the border between navigation bar items when they are clicked. The second approach achieves the same functionality using the new View Transition API. Read more…

April 23, 2025 — Poor internet connectivity doesn’t have to mean poor UX. With PWA technologies like IndexedDB, service workers, and the Background Sync API, you can build an offline-friendly image upload system that queues uploads and retries them automatically — so your users can upload stress-free, even when offline. Read more…

December 3, 2024 — Forms are already notoriously tough to customize and style — to the extent that we’re already starting to see new ideas for more flexible control. But what we don’t often discuss is designing good-form experiences beyond validation. That’s what Jima Victor discusses in this article, focusing specifically on creating multi-step forms that involve navigation between sections. Read more…

October 7, 2024 — RSS is a classic technology that fetches content from websites and feeds it to anyone who subscribes to it with a URL. It’s based on XML, and we can use it to consume the feeds in our own apps. Karin Hendrikse demonstrates how to do exactly that with a static site you can use as your personal RSS reader. Read more…

August 26, 2024 — Want to create more randomized effects in your JavaScript code? The Math.random() method alone, with its limitations, won’t cut it for generating unique random numbers. Amejimaobari Ollornwi explains how to generate a series of unique random numbers using the Set object, how to use these random numbers as indexes for arrays, and explores some practical applications of randomization. Read more…

August 20, 2024 — Although JavaScript regexes used to be underpowered compared to other modern flavors, numerous improvements in recent years mean that’s no longer true. Steven Levithan evaluates the history and present state of regular expressions in JavaScript with tips to make your regexes more readable, maintainable, and resilient. Read more…

August 1, 2024 — Handling translations for multilingual websites is famously difficult and, yet, crucial for many companies and organizations that serve a global audience. Thankfully, modern tooling abstracts away a great deal of the work, allowing for seamless translations that dynamically update the rendered content on a page, as demonstrated in this step-by-step tutorial. Read more…

June 20, 2024 — Have you heard of the Screen Orientation API? What about the Device Orientation API, Vibration API, or the Contact Picker API? Juan Diego Rodriguez is interested in these under-the-radar web features and discusses how they can be used to create more usable and robust progressive web apps if and when they gain broader support. Read more…

May 28, 2024 — Application frameworks have built whole ecosystems on top of them. Let’s take a closer look at serverless platforms such as Netlify’s Platform Primitives and explore how they can increase our productivity with a serverless fullstack experience. Read more…