Question 1

How does a closure work in JavaScript?

Accepted Answer

Lexical scope means the scope chain is fixed at write time. When a function is defined inside another, it gets an outer reference to the outer function's environment. That reference travels with the function object, even after the outer function returns.

Question 2

What is a closure in simple words?

Accepted Answer

A closure allows a function to remember variables from its outer scope.

Question 3

Are closures important for interviews?

Accepted Answer

Yes. Closures are one of the most commonly asked JavaScript interview topics.

Question 4

What are closures used for?

Accepted Answer

Closures are used for data privacy, callbacks, event handlers, and many advanced JavaScript patterns.

How does a closure work in JavaScript?

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