React Developer Interview Questions

3,476 react developer interview questions shared by candidates

1. React fibre 2. Event Loop in JS, 3. Closure and hoisting. 4. Output based question. 5. Three DSA on arrays and string. 6. React query. 7. Typescript -> Why we use typescript, What is generics in TS, What is iterface in TS. 8.React hooks and there usecases. 9. Fetching the API in react and showing the result on react web UI. 10. Create one custom hook for fetch API. 11. What is specifity in CSS. 12. Sorting the result of API.
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React Js Developer

Interviewed at Calsoft

4.3
Jan 17, 2025

1. React fibre 2. Event Loop in JS, 3. Closure and hoisting. 4. Output based question. 5. Three DSA on arrays and string. 6. React query. 7. Typescript -> Why we use typescript, What is generics in TS, What is iterface in TS. 8.React hooks and there usecases. 9. Fetching the API in react and showing the result on react web UI. 10. Create one custom hook for fetch API. 11. What is specifity in CSS. 12. Sorting the result of API.

You are working on a new feed to promote the company social network activity, you are provided with access to the account’s posts and comments, your job is to integrate that activity into the website. Task Build a ReactJS project that fetches from the posts and comments APIs, presents a list of posts and when any of the items is clicked show the list of comments that are associated with that specific post. You are responsible for: • - Fetching the data from the API. • - Presenting the data in the view. • - Relate comments to posts. Stretch goals • - Set up project to use redux • - Test your components • - Allow the user to comment on a post and save the comment on state/redux. Document any assumptions and design decisions you have made. Posts API: https://jsonplaceholder.typicode.com/posts Comments
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React Developer

Interviewed at AutoFi

3.4
Oct 13, 2021

You are working on a new feed to promote the company social network activity, you are provided with access to the account’s posts and comments, your job is to integrate that activity into the website. Task Build a ReactJS project that fetches from the posts and comments APIs, presents a list of posts and when any of the items is clicked show the list of comments that are associated with that specific post. You are responsible for: • - Fetching the data from the API. • - Presenting the data in the view. • - Relate comments to posts. Stretch goals • - Set up project to use redux • - Test your components • - Allow the user to comment on a post and save the comment on state/redux. Document any assumptions and design decisions you have made. Posts API: https://jsonplaceholder.typicode.com/posts Comments

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