7 articles found
I used to hate Promises. Callbacks felt intuitive and Promises felt like ceremony. Then I actually learned how they work -- the constructor, chaining, combinators, the microtask queue -- and I stopped fighting them. Here's everything I figured out the hard way.
I bombed a whiteboard interview because I couldn't explain __proto__ vs .prototype. Went home and actually figured it out. Here's the prototype chain, Object.create, constructor functions, and why ES6 classes are just syntax over the same old mechanism.
Design patterns get a bad rap, but a handful of them genuinely earn their keep in JavaScript. This opinionated walkthrough covers seven patterns — module, observer, singleton, factory, strategy, decorator, and facade — with honest takes on which ones I actually reach for in real code and which ones mostly live in textbooks.
JavaScript runs on a single thread, and the moment you throw something heavy at it, the whole page locks up. Web Workers give you actual background threads that run in parallel with the main thread. Here is how to use dedicated workers, shared workers, transferable objects, and worker pools — with real examples like image processing and large file parsing.
ES2025 adds the pipeline operator, pattern matching, Records and Tuples, Set methods, the Temporal API, and more. Some of it is genuinely exciting. Some of it you probably won't touch for another two years. Here's an honest look at what's coming.
Closures clicked for me when I stopped reading definitions and started looking at code I'd already written. Turns out I'd been using them for years without knowing it. Here's how I'd explain them to someone on my team.