React Developer Interview Questions

3,040 react developer interview questions shared by candidates

n React, a controlled component is one where form data is handled by the React component state. The value of the input is controlled by React through useState or similar. On the other hand, an uncontrolled component uses the DOM itself to handle the form data — usually with a ref to access the value directly.
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React Developer

Interviewed at Zoho

4.2
Jun 9, 2025

n React, a controlled component is one where form data is handled by the React component state. The value of the input is controlled by React through useState or similar. On the other hand, an uncontrolled component uses the DOM itself to handle the form data — usually with a ref to access the value directly.

Test duration 90 mins No. of questions 4 questions "Questions Feel free to choose your preferred programming language from the list of languages supported for each question. There are 4 questions that are part of this test: Question Indexes Question Types Q1 - Q4 Coding Questions 21 languages allowed: c, clojure, cpp, cpp14, csharp, erlang, go, haskell, java, java8, javascript, julia, kotlin, lua, objectivec, perl, php, r, ruby, scala, swift" 1. Circular Printer 2. Balanced Array 3. Whole Minute Dilemma 4. Astronomy Board Game
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React Native Mobile Developer

Interviewed at CarWale

3.6
Jun 28, 2022

Test duration 90 mins No. of questions 4 questions "Questions Feel free to choose your preferred programming language from the list of languages supported for each question. There are 4 questions that are part of this test: Question Indexes Question Types Q1 - Q4 Coding Questions 21 languages allowed: c, clojure, cpp, cpp14, csharp, erlang, go, haskell, java, java8, javascript, julia, kotlin, lua, objectivec, perl, php, r, ruby, scala, swift" 1. Circular Printer 2. Balanced Array 3. Whole Minute Dilemma 4. Astronomy Board Game

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