What delay should you use for throttle in a scroll handler?
100ms. This gives smooth feedback (10 updates per second) without overwhelming the browser. For mousemove, use 50ms. For rapid button clicks, use 500ms.
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More FAQs in Debounce vs Throttle: Best Practices
Choose the right technique (debounce for bursty events, throttle for continuous), use appropriate delays (300ms search, 100ms scroll), preserve this and args (apply), add cancel method, clean up on unmount, and use lodash for production.
For production, use lodash. It handles edge cases (this, args, cancel, leading/trailing edges, max wait). For interviews, implement from scratch to show understanding. Use lodash in real code, implement in interviews.
300ms. It is fast enough to feel responsive and slow enough to skip intermediate keystrokes. For faster response use 200ms, for slower 500ms.
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