JavaScript Internals Most Developers Ignore

Most developers think they know JavaScript. They don’t. They know syntax… but miss the real power behind it. ⚡ JavaScript isn’t powerful because of features It’s powerful because of how it behaves under the hood 🧠 1. Functions are First-Class Citizens You can pass, return, and store functions anywhere. function greet(name) { return Hello, ${name} ; } const sayHi = greet; console.log(sayHi("Ishwar")); 👉 This is why callbacks, middleware, and hooks exist. 🔁 2. Closures (The Silent Superpower) F