No matter what you’re coding, there’s always room to optimize your code and improve performance. This can be a painstaking process, and if you’re going over your code line by line you’d better cancel all your plans and forget about getting any sleep! Fortunately, there are better ways to examine and optimize your code. A JS profiler is an efficient tool to help you understand your code better – effectively finding, pinpointing and optimizing bottlenecks in your code.

What makes JavaScript great is also what makes it frustrating to debug. Its asynchronous nature makes it easy to manipulate the DOM in response to user events, but it also makes it difficult to locate problems. And JavaScript’s ubiquity has resulted in a variety of runtimes (e.g. Chromium’s V8, Safari’s JavaScriptCore, and Firefox’s SpiderMonkey) but having so many platforms can cause dizzying idiosyncracies — all of which need to be supported equally.

As you could probably tell from the title, we shipped an SDK for Next.js. This means you can capture errors, measure performance, manage releases, configure suspect commits, and automatically upload sourcemaps to view unminified JavaScript and TypeScript with zero(-ish) configuration. Why was Next.js next on our list? Well, it’s one of the fastest-growing React frameworks and developers love it.

Single-page applications (SPAs) provide some significant benefits over multiple-page apps. For JavaScript developers using frameworks like React or Vue, they offer flexibility in moving application logic to the frontend, reducing the need for complex backend operations. For users, SPAs can provide a smooth experience with a highly interactive UI and fewer page loads. But, with increased sophistication, there are some tradeoffs.

JavaScript is a common language in mobile and web app development. Due to its popularity, JavaScript optimization is becoming increasingly necessary for improving application performance. Let’s learn some of the challenges associated with JavaScript and how to optimize js performance.

No user likes to spend time waiting for a web page to load. No web developer likes a website or app to fail either. It’s important to focus on creating quick loading pages with error-free code. JavaScript is used to build the majority of the dynamic, real-time applications. JavaScript’s strength is in the context of apps that update content dynamically with minimal latency. JavaScript performance testing should be a priority for ensuring a good end user experience and optimal performance.

In January we brought Release Health to JavaScript. This month we’ve been thinking about the overall experience for JavaScript developers, some could call it JavaScript Jebruary. Think back to your last frustrating experience. It was probably caused by slow page loads or getting dizzy from staring at the ever-ending spinner. One survey showed that the average desktop load time on a webpage was 10.3 seconds and on mobile, it was 27.3 seconds.

It’s January 2021 and you’ve probably broken five out of six New Year’s Resolutions. I don’t want to be the reason for breaking your last one, so I’ll cut right to the chase. We just released an update to our JavaScript SDK with the ability to track the health of your releases and support for Web Assembly. Still with me? Great.

Some devs use JavaScript in the browser; some use JavaScript on the server. What if you do both?