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Iterators & for...of
mediumComplete guide with examples and interview questions · 30 min
Definition
Say it out loud in an interview — clear, simple, no textbook wording.
Iterable protocol, custom iterators, and spread with iterables.
In interviews, lead with a clear one-liner, then add one example. Senior rounds go deeper on edge cases and trade-offs — have a short code snippet ready.
Quick Stats
30
Minutes
medium
Difficulty
4
Interview Q's
Key takeaways
- •Core concepts for Iterators & for...of interviews
- •Know the definition and one concrete example
- •Watch for common traps senior interviewers probe
- •Tie answers back to real debugging experience
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