Advanced Patterns — Debounce, Throttle & Polyfills

Overview

Debouncing delays a function until after a quiet period (e.g., wait 300 ms after the last keypress). Throttling limits calls to at most once per interval. Both use closures and setTimeout/clearTimeout. A polyfill reimplements a missing built-in for older environments. Writing polyfills for map, filter, reduce, bind, call, and apply reinforces understanding of how these methods work internally via prototype manipulation.

Practice Linked Questions