Launched January 3, 2023
Final Countdown JS

Final Countdown JS

A react hook library to handle all kinds of timers

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Are you using React and need to create a timer? Use one of Final Countdown JS's five hooks and you'll create one in seconds for your website.

A React hook library providing countdown, countup, timer, and stopwatch functionality.

for
React developers needing easy timer components
pricing
open source
works withReactnpmyarnpnpm

Key features

5 features of Final Countdown JS
  • useCountDown hook — Creates a customizable countdown timer with pause, resume, reset and finish callbacks.
  • useCountUp hook — Creates a count-up timer with similar controls and formatting options.
  • useStopwatch hook — Provides a stopwatch with optional end time, pause, resume and elapsed/remaining metrics.
  • useTimer hook — Implements a timer that counts down from a start time with pause and finish events.
  • Flexible formatting — All hooks return time strings with and without leading zeros for easy display.

Use cases

  • Display a countdown for a sale or event on a React site
  • Show elapsed time for a user session or game
  • Implement a stopwatch for tracking task duration
  • Create a timer that triggers an action after a set period
  • Build a count-up animation for statistics or scores

Final Countdown JS FAQ

How do I install Final Countdown JS?+

Run npm install final-countdown-js or use yarn add / pnpm install.

Can I use the hooks without installing the package?+

Yes, the README suggests using Nova.js for dependency-free React hooks.

What formats are supported for start and end times?+

Times must be strings in dd:hh:mm:ss format, with an optional custom separator.

How can I run code when a timer finishes?+

Pass an onFinish function in the options object for any hook.

Is the library still maintained?+

The repository was archived on Dec 16 2025 and is now read-only.

Summarized by DevHunt from github.com · Sep 27, 2026. Details may change; check the official site.