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React Developer Interview Questions
3,048 react developer interview questions shared by candidates
1st round: Simple questions on react - why and what of react. Virtual dom . simple array and object manipulation in javascript. Lifecycle of react. 2nd round: Some concepts in react and react hooks(about use context, use ref, use callback, usestate, usereducer) redux, redux thunk, Form validation in react. Difference between Props and state. the version of react which you used. What and why of closure. Why do we need typescript ?. Be genuine of what you know and what you dont know. My interviewer asked questions based on what i said i know
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What is JavaScript? What is React?
Life cycle of react Useref
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Be prepared for personal questions. Some interviewers may not know what they can and cannot ask legally. Anticipate how you will handle such questions without losing your composure.
Write a react component in jsx that will display 60 blacksqaures across 6 rows .Every sec,make one black sqaure turn white.Once every square is white turn them back to black squares and restart the process.
Write a react component in jsx that will display a button containing number on click the number will increase by 3 and buttons color should change randomly
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