Which answer is correct?

Use `AbortController` to cancel the previous fetch, and debounce the input event. This prevents the race condition where an older response arrives after a newer one.

— fetch_expert

Use `lodash.debounce(fn, 300)`. It handles edge cases like leading/trailing calls, cancellation, and max wait.

— lodash_fan

Use `requestAnimationFrame`. It naturally batches events to 60fps.

— animation_dev

Use `setTimeout` in the event handler and `clearTimeout` to cancel previous timers: ``` let timer; input.addEventListener("input", (e) => { clearTimeout(timer); timer = setTimeout(() => search(e.target.value), 300); }); ```

— vanilla_js