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Frontend · Senior · Theory

Walk me through how the event loop works in the browser and where frame rendering fits into it. How has this knowledge helped you in practice?

~4 min by voice

How to approach it

This checks whether the candidate understands the precise event loop model: one macrotask, then the microtask queue drained completely, and where rAF and rendering sit in that loop. Just as important: whether they can turn that model into practice by diagnosing long tasks, improving INP, and breaking up heavy work.

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Answer by voice

The interviewer will ask this question and listen. Think out loud and ask for a hint if you need one. When you're done, pause or tap “That's my answer”. In about a minute, your score and the points you covered show up here.

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Best with headphones · ~4 min