You're Already Using JavaScript Closures—Here's Why

JavaScript closures are often misunderstood yet fundamental to the language, enabling functions to maintain private state and implement encapsulation. Understanding closures is critical for grasping how modern JavaScript patterns like callbacks, event handlers, and module patterns actually work. Developers who truly understand closures write more predictable, maintainable code and avoid common pitfalls that trip up those relying on intuition rather than understanding.