Answer
A closure is a function that retains access to its lexical scope even after the outer function has returned.
Quick Answer
A closure is a function that remembers the variables from its outer scope even after the outer function has returned. The inner function "closes over" those variables. Common use: factory functions, data privacy (like private variables), and callbacks that need access to loop variables. Every function in JavaScript is a closure.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ