Most JavaScript devs begin with: arrays objects …and honestly, that works for a lot of things. But eventually you hit situations like: 👉 “Why am I manually removing duplicates?” 👉 “Why is object key lookup getting messy?” 👉…

At some point you discover JavaScript has this thing called Symbol … And your first reaction is usually: 👉 “wait… why does this even exist?” Honestly fair 😄 Because unlike strings, numbers, or objects, Symbols don’t feel useful immediat…

WeakMap and WeakSet are two of the most misunderstood JavaScript features. Not because they’re hard — but because you don’t need them every day. When you do need them though, nothing else fits quite as well. I didn’t really a…

These two operators quietly changed how we write JavaScript. No more defensive && chains. No more accidental fallbacks when values are valid. Once you start using ?. and ?? , your code becomes cleaner, safer, and easier to reason about …

JavaScript looping used to feel unnecessarily annoying. You had stuff like: for (let i = 0; i < arr.length; i++) { console.log(arr[i]); } Works? Sure. Fun to read? Absolutely not 😄 Then for...of came in and basically said: 👉 “b…