MasterReactThroughReal-WorldChallenges

Practice hands-on React coding with TypeScript in a realistic environment. Use the Monaco editor with IntelliSense, autocomplete, and Vim mode to write clean, professional code, and run tests on a real Node + Jest server that mirrors production and interview conditions.

Last challenges

#41
60min

React Quiz

Build a timed React quiz with randomized questions, penalties, and step-based navigation, focusing on clean state management and predictable UI flow.

useStateuseEffect
#42
30min

Countdown

Build a countdown timer that tests your React fundamentals by handling state, side effects, and precise time-based updates under real-world conditions.

useStateuseEffect
#43
120min

Tetris

This is a classic Tetris game implemented in React using a canvas for rendering. The game allows players to move, rotate, and drop pieces, complete rows to earn points, and ends when new pieces cannot be placed on the board.

useStateuseEffect
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  • 3Run and test directly in your browser
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$7/month
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  • 1Start solving free coding challenges
  • 2All challenges include TypeScript and pre-styled layouts
  • 3Code editor with optional Vim mode
  • 4Run and test your code instantly in the browser
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