JS Closures: Real Production Use Cases Beyond Interviews
TL;DR: Most developers only encounter closures during interview prep or basic counter examples. This post dives into how closures power real-world frontend scenarios: event listeners, encapsulation, memoization, and reactive programming. Walk away with patterns you can use today. Every JavaScript developer has seen the classic closure examples: counters that increment, multiplier functions that return other functions. These textbook cases teach the concept but leave you wondering when you’d actually reach for closures in real frontend work. ...