Autocomplete: core build
Comes up in: Machine coding, Frontend system design
This concept is being written. It gets the full five steps — explanation, predict, interview angle, practice with tests, and review cards. Here is exactly what it will cover, so you can study it elsewhere in the meantime.
What it covers
- debounced input
- fetching suggestions
- race handling (abort/last-wins)
- loading/empty/error states
- highlighting matches
- selecting with mouse and keyboard
Words you will know
What you will practise
- build (rung 2 faded → rung 4 timed 60 min)
Interview questions this answers
- Build an autocomplete. How do you avoid showing stale results?
- How do you make the autocomplete accessible to screen-reader users?
- How does IME input (e.g. Hindi, Japanese) affect your implementation?