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Laura Villa for SunDevs Inc.

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10 key questions for ReactJs developers

Many companies use techniques such as live coding or assigning a project with very specific characteristics for hiring React developers, this way, they can evaluate the way in which he develops software and get to know if the programmer implements good practices or not.

As part of a project, we can include a technique test, that can be focused on the theoretical. Also, you can consider 10 key questions for asking the candidate:

  • What is State?
  • How doesVirtualDOM work and what are the differences with Real DOM?
  • What are the differences between state and props?
  • What are the lifecycle’s methods in React?
  • What is the render() method used for in React?
  • What is the difference between Stateful Components and Stateless Components?
  • What are HOC (High Order Components)?
  • What is Redux and which are its components?
  • Explain Redux’s components
  • What are hooks? Mention how do useState and useEffect work

Many developers will be nervous and may be confused in answering, but the candidate should be aware that these questions are not meant to judge him or her, but it's part of a process that helps to determine how will be his or her performance in the project.

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