FrontendHaltJavaScript·Intermediate·Conceptual·1 min read
What does the JavaScript event loop coordinate?
Short interview answer
It coordinates execution between the JavaScript call stack and host-managed queues. A task runs to completion; after it finishes, the runtime drains eligible microtasks before the browser gets its next rendering opportunity and selects another task.
Key takeaway
Explain the underlying mental model clearly, then support it with a concrete example and its trade-offs.