Build a Toast / Snackbar Queue with Pause on Hover

Question

Accepted Answer

**Requirements**
- `toast.success(msg)` / `toast.error(msg)` API via context; stack toasts bottom-right, max 3 visible, queue rest.
- Auto-dismiss 3s, pause on hover, manual close (×), progress bar.
- Enter/exit animation (slide + fade); accessible `role="status"` + `aria-live`.

**Architecture**
- `ToastContext` holds `queue: Toast[]`. `add` pushes; visible = queue.slice(0,3). Timer per toast via `setTimeout`; on hover, clear timeout and track remaining.
- Portal to `document.body`; `useEffect` cleanup clears timers on unmount.
- Queue promotion: when a toast dismisses, next queued toast animates in.

**What interviewers look for:** context API design, per-toast timer with pause/resume, portal, animation, max-visible + queue.

**Reference implementation**
```jsx
const ToastCtx = React.createContext();
export function ToastProvider({ children }) {
  const [toasts, setToasts] = React.useState([]);
  const add = (msg, type="info") => {
    const id = Date.now();
    setToasts(t=>[...t, {

Build a Toast / Snackbar Queue with Pause on Hover

Understand the problem

Attempt it yourself

Study the solution

Solution ready — 2 min read

Join the discussion

Discussion (0)

KEEP THE
STREAK ALIVE.

Understand the problem

Attempt it yourself

Study the solution

Solution ready — 2 min read

Join the discussion

Discussion (0)

KEEP THESTREAK ALIVE.

KEEP THE
STREAK ALIVE.