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Crash Track (7 days)

Short deadline? 30 high-yield questions for a focused 7-day sprint.

7-day focus30 curated questionsFull route stays premium

Async JS essentials: debounce/throttle, promises, and event loop
UI data flows: debounced search, pagination, and table-state patterns
Two must-know FE system design prompts: real-time search and infinite scroll