The answer
Closures, event loop, this keyword, promises/async-await, prototypes, debounce, throttle, and polyfills (map, filter, reduce, bind, Promise.all). Do not try to learn something new on the day of the interview. Review what you know.
JavaScript Interview: Tips for Success
What should I review before a JavaScript interview?
More FAQs in JavaScript Interview: Tips for Success
Think aloud, start simple then optimize, know your weak areas, implement everything from scratch, practice edge cases, be honest, ask clarifying questions, code cleanly, test your code, and review the basics before the interview.
Yes. The interviewer evaluates your thinking, not just your code. Explain your approach before coding. Discuss trade-offs. If you are stuck, say what you are thinking. Communication is part of the evaluation.
Be honest. Say 'I do not know, but here is how I would approach it.' Try to reason from first principles. Interviewers respect honesty and problem-solving more than a fake answer. Do not bluff.
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