Common Use Cases
Closures are useful in various scenarios:
- Maintaining State: Closures help maintain state between events in event-driven JavaScript.
- Private Variables: You can create private variables by enclosing them within a closure.
- Callbacks and Asynchronous Code: Closures are essential for handling callbacks and asynchronous operations.
Closure in JavaScript
Closures in JavaScript are functions that retain access to variables from their containing scope even after the parent function has finished executing. They’re useful for maintaining private data, creating modular code, and implementing callback functions with persistent state. In this article, we’ll dive deep into closures, understand how they work, and explore practical examples.