🧩 Closure in Js

A closure in JavaScript is a feature where a function retains access to the variables from its outer (enclosing) function even after that outer function has finished executing. This means that a closure allows the inner function to "remember" and use variables from its surrounding scope, even if that scope is no longer active.

Closures are useful for creating private data, maintaining state between function calls, and managing asynchronous code, such as callbacks or event handlers. They enable functions to "capture" the environment in which they were created.

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