Autocomplete looks simple but tests many frontend skills: debouncing, caching, keyboard navigation, accessibility, and performance.
"Design an autocomplete" appears frequently at Google, Amazon, and Airbnb.
You'll learn:
- Query handling and debouncing
- Results rendering and highlighting
- Keyboard and mouse interaction
- Caching strategies
- Accessibility requirements
You'll find this component in search bars, form fields, and command palettes across most applications.