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πŸš€ 40 React Interview Questions Top Tech Companies Are Asking in 2025 πŸ”₯

Hadil Ben Abdallah on April 28, 2025

Are you preparing for a front-end interview in 2025? 🌐 Whether you're eyeing a role at FAANG, a hot startup, or a product company, React is still r...
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Mahdi Jazini

The article was very useful and comprehensive...!
You really covered the key and important React questions very concisely and effectively, and the explanations and examples were excellent too. I learned a lot of new tips, and this will definitely be very helpful for interview preparation. If you have any more resources, tests, or sample questions, I’d be happy if you could share them. Thank you for putting this together.....! πŸ™πŸ‘

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Hadil Ben Abdallah Final Round AI

Thank you so much for your thoughtful and encouraging feedback! I'm really happy to hear that you found the article clear, comprehensive, and helpful for your interview preparation.

I’ll definitely be sharing more resources, sample questions, and even some mini practice tests soon, stay tuned! If there are specific topics you'd like me to dive deeper into (like advanced hooks, system design with React, or coding challenges), feel free to let me know.

Thanks again for your support! πŸ™πŸ»

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Mahdi Jazini

πŸ™

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Rense Bakker

Strong disagree on controlled over uncontrolled. Its a nasty habbit in the React community to make everything controlled. In reality you don't need a controlled component in 90% of cases and making a component controlled, comes with serious drawbacks like: increased renders and increased component responsibilities.

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Hadil Ben Abdallah Final Round AI

Thank you for sharing your perspective πŸ™πŸ» It's a valuable contribution to the ongoing discussion about controlled versus uncontrolled components in React.

You're absolutely right that uncontrolled components can offer performance benefits and simplicity, especially in scenarios where form data doesn't need to be managed in real-time. For instance, in cases like file uploads or simple forms where the data is only needed upon submission, uncontrolled components can be more efficient and require less boilerplate code.

However, it's also important to recognize the advantages of controlled components, particularly in complex applications. Controlled components provide a single source of truth by managing form data through React's state, which facilitates features like instant validation, dynamic inputs, and conditional rendering. This level of control can enhance user experience and maintainability in larger applications.

Ultimately, the choice between controlled and uncontrolled components should be guided by the specific requirements of your project. Both approaches have their merits, and understanding when to use each can lead to more efficient and effective React applications.

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Pouyan Jazini

Great article, well done! You helped me define some concepts more clearly and avoid overcomplicating them.

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Hadil Ben Abdallah Final Round AI

Thank you so much Pouyan πŸ™πŸ» I'm so glad that you found it helpful

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Ben Abdallah Hanadi

Very helpful article. Thanks a lot for sharing ❀

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Hadil Ben Abdallah Final Round AI

You're welcome πŸ™πŸ»πŸ™πŸ»