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What are closures in JavaScript?

Q: What are closures in JavaScript?

**Core concept (TL;DR).** A *closure* is a function bundled together with references to the variables of the scope in which it was **defined** — its lexical environment. The inner function keeps a *live link* to those outer variables even after the outer function has already returned. A closure keeps its birth scope alive on the heap makeCounter() scope — survives return <rect x="40" y="68" width="150" height="30" rx="

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Closures are a core concept demonstrating deeper understanding of scope and function execution.

closuresscopefunctionslexical environment

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