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React js interview questions

DevSkiller React JS interview questions are prepared by our dedicated team of professionals for junior, middle, and senior React JS developers. Our tests are uniquely designed to ensure you find the perfect candidate for your company, through our range of challenges.

All DevSkiller coding tests are powered by the RealLifeTesting™ methodology. A unique way of testing that simulates real-world challenges for your applicants to solve that reflects the real work they will do on the job.

Find your next React JS developer today with our range of tests.

Try these related coding tests:
JavaScript coding interview questions and tests
HTML and CSS online tests
React Native Online Coding Tests

Recommended roles for React JS online tests and coding questions

  • React JS Developer
  • Frontend Developer
  • Mobile developer
  • Junior React JS Developer
  • Middle React JS Developer
  • Senior React JS Developer

How our React JS online tests work

DevSkiller React JS questions are powered by the RealLifeTesting™ methodology. This unique way of testing developers, allows you to assess your applicants’ knowledge of the React JS framework in a controlled environment. DevSkiller React JS tests can provide you with a clear understanding of your applicants’ knowledge, coding ability, critical thinking, and time-management skills.

Key features

  • DevSkiller online tests provide clear insight into your applicants’ actual coding skills, and not just their academic knowledge.
  • Remote-testing, saving time and money.
  • The RealLifeTesting™ methodology offers candidates a unique user experience. They can use their own IDE, clone to GIT, run unit tests, and access Stack Overflow/Github/Google for research.
  • Anti-plagiarism tools to ensure accurate test results
  • Observe individual tests in real-time
  • Automated results that non-technical professionals can understand
  • Tests available for all levels of experience

Skills covered by our React JS interview questions and answers

  • React JS
  • JavaScript
  • React
  • ES6
  • Class Components
  • Enzyme
  • html
  • CSS
  • Node.JS
  • TypeScript
  • React Hooks
  • MongoDB
  • REST API
  • Redux
  • React Testing Library
  • Gradle
  • Groovy
  • Web development
  • Tooling

What is React JS?

React JS is a mobile framework designed and maintained by Facebook. It is the exact same framework as React, but is sometimes called differently. However, this should not be confused with React Native, which does have some differences.

With React JS developers can build encapsulated react components that manage their own state. Component logic is written in JavaScript instead of templates, meaning you can easily pass rich data through your app and keep ‘state’ out of the DOM.

What to look for in React JS developers

When screening a React JS developer, the seniority level of the developer is very important. For instance, commercial experience is a must for senior or lead-level positions, but not so much for junior React JS developers.

Your React JS applicants need to possess the right skill set. Familiarity with the current JavaScript standard – ECMAScript2019 (ES10), is a big plus. Ability in TypeScript will also be useful.

Knowledge of ReactJS libraries is also important—React-Router, Redux, Redux-Thunk, Redux-Saga, and GraphQL libraries, are some examples.

Build your own custom React JS test

Could your company benefit from creating your own tailored React JS tests using your own codebase? No problem. The DevSkiller online task wizard comes prepared with awesome features that allow you to customize your test invites. Choose the languages you want to test, define the test scope, and duration all while monitoring your applicants’ process in real-time.

Remote testing allows your candidates to access the tests from wherever they are.

Still unsure about our React JS online tests?

Interested in trying DevSkiller out for your business but need a little extra push? Check out what some of our satisfied customers have to say:

Erin Wortham, Director of Talent at Headspring

‘Having a solution that mirrored real-world work was a must.”

Jonatan Rugarn – CEO, Founder, Recruiter at Lingonberry Talent Acquisition, Engineering Manager at Avinode Group

“The duration of the recruitment process has not changed, but we spend less time and effort per candidate. We also don’t waste time on the wrong candidates.”

Frequently asked questions

What is RealLifeTestingTM?

The RealLifeTestingTM methodology is the foundation of all DevSkiller React JS interview questions and online tests. Rather than traditional game-like quizzes or algorithmic puzzles, RealLifeTestingTM provides a complete view of the skills of each applicant. At its core, the RealLifeTestingTM methodology stems from the belief that the best way to evaluate a developer’s skills is with a work sample test that mirrors the actual development work they’ll do.

Our React JS online tests require candidates to build full project apps or add features to existing apps, similar to the work they’ll do if hired. To be successful, candidates need to possess demonstrable knowledge of coding, understand resources like Stack Overflow, and possess critical thinking to determine the best method for resolving problems they may encounter. Results are automatically generated and detail the candidate’s coding skills, decision-making, code cleanliness, and problem-solving skills.

How are React JS interview questions and online tests evaluated?

Once a candidate completes their test, the DevSkiller platform gets to work automatically evaluating the answers. The results are prepared into a report that even a non-technically minded recruiter can easily understand.

Candidates are assessed in various ways including on the likelihood of whether or not the solution they came up with would run (an essential factor in all software development), the number of errors in the code, the quality of the code, and how it works in edge cases. There are also a number of robust anti-plagiarism tools to ensure the accuracy of each test.

What’s the test duration?

Test duration for each React JS test is flexible and can be set to your company’s preferences. Clients can opt for the default settings or set their own test duration.

How long does it take to set up DevSkiller?

Setting up your first React JS coding test can take as little as 5 minutes. DevSkiller’s extensive library of pre-defined React JS tests means that you can start testing your candidates right when you set up your account, with no other work required.