Build a Timer Component in React JS | Frontend Interview Challenge | CodeWithKai
In this video, I'm going to walk you through building a Timer Component in React - it's actually one of those questions that comes up a lot in frontend interviews.
CodeSandBox Link:
https://codesandbox.io/p/sandbox/time...
This is honestly one of my favorite interview challenges because it really tests whether you understand React fundamentals - things like state management, useEffect, working with intervals, and making sure your component doesn't cause unnecessary re-renders.
We'll break it down together: Setting up time updates with setInterval Adding pause, reset, and resume functionality Making sure the component is reusable and performs well By the time we're done, you'll have a solid Timer Component that you could confidently present in an interview or even use in a real project.
If you're working on frontend interviews or just want to get better with React, make sure to subscribe - I post these kinds of practical coding challenges regularly.
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