React Js Developer Interview Questions

538 react js developer interview questions shared by candidates

What is VDOM? What are Hooks and explain all the hooks? What are lifecycle hooks in react.? Whats the need of setstate to be asynchronous? Advanced js questions like closures and where it you apply closures in rela life situations? What is currying? What are prototypes? Before es6 how could be build a prototypal inheritance??
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React Js Developer

Interviewed at Nineleaps Technology Solutions

4.1
Jan 8, 2021

What is VDOM? What are Hooks and explain all the hooks? What are lifecycle hooks in react.? Whats the need of setstate to be asynchronous? Advanced js questions like closures and where it you apply closures in rela life situations? What is currying? What are prototypes? Before es6 how could be build a prototypal inheritance??

first round : async await, promises syntax, call apply bind, closure, rest vs spread, asynchronous operation, react hooks. etc second round : main vs branch, push vs commit, agile methodology, exact keyword?, router vs routes, unit testing, thunk vs async await etc
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React Js Developer

Interviewed at HCLTech

3.5
Jan 7, 2025

first round : async await, promises syntax, call apply bind, closure, rest vs spread, asynchronous operation, react hooks. etc second round : main vs branch, push vs commit, agile methodology, exact keyword?, router vs routes, unit testing, thunk vs async await etc

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