Answer
The event loop handles asynchronous callbacks, allowing JavaScript to remain non-blocking despite being single-threaded.
Quick Answer
The event loop is JavaScript's concurrency mechanism. It continuously checks: is the call stack empty? If yes, take the next task from the callback queue (macrotasks) or microtask queue (Promises). Microtasks run before macrotasks. This single-threaded loop is how JS handles async operations without blocking.
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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