Bite-sized JavaScript, React, and Next.js tips.

Clear, minimal explanations with code and diagrams you can read in minutes.

CDN Explained: What It Is, How It Works, and How to Use It in Next.js✨ New

A CDN speeds up your app by serving assets from servers close to your users. Here's how it works and how Next.js takes advantage of it.

What queueMicrotask does, how it differs from Promise.then, and how microtasks really work under the hood.

Async/await feels like parallel code, but it isn’t. Here’s why JavaScript is still single-threaded and how async really works.

If JavaScript is single-threaded, how can Promise.all handle multiple requests at the same time? A deep dive into the event loop and async I/O.

A practical and conceptual comparison of Promise.all, Promise.race, Promise.any, and Promise.allSettled.

Posted on December 30·3 min read·#javascript #promises #async #event loop

A practical guide to TypeScript enums, their runtime cost, and better alternatives for modern frontend apps.