React.js Skill Assessment

Quizack provides React.js MCQ practice question answers in an interactive format.

React.js MCQ

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React.js Online Quiz

Quizack 10 minutes test will assess your knowledge and give you comprehensive results along feedback.

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React.js PDF Download

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Used by 100s of Jobseekers and students

Used by 100s of Jobseekers and students

Focused questions for skill assessment

Focused questions for skill assessment

Premium questions with correct answers

Premium questions with correct answers

Related Skill Assessment

React.js Skill Assessment:


It is a front-end, open-source JavaScript library launched to build UI components. This library allows developers to build Web APPs that work optimistically without reloading all the data of any particular web page. Moreover, React.js enables you to handle the view layer of mobile and web applications.

Quizack React.js tutorial will evaluate skills as per ongoing trends

Your skill evaluation will be truly effective if you are given the authentic and latest information and this is not possible if you are consulting random online resources. It will be possible only if you have subject matter experts with years of practical knowledge. So we do follow this approach and have the most relevant industry experts. 

Your abilities and skills will be evaluated and assessed through the latest topics, 100% verified answers, typical scenarios, and interactive online sessions. You can prepare yourself quickly within minutes against upcoming online Assessments, IT exams, Freelance Skill tests, and Job interviews. 

Experts have designed Quizack React JS skill test to cover topics

  • Event handling
  • Rendering functions
  • React rules and facts
  • React multiple choice quiz
  • Mounting method
  • Component optimization
  • React JS coding test questions

Diagnose scenarios quickly through interactive React JS online practice

For the sake of your best online practice, we have made available the “React.js Q&A” practice session. This online exercise has no limitations at all. You are free to browse questions of your own choice and see their answers on the spot. To encourage you more, we have presented questions in the same format as in the real exams. Consequently, our online practice will provide you with an understanding of how to tackle real-time scenarios and what would be the possible solutions.

“React.js Online Test” is an assessment tool. Yes, you can call it a virtual session as well because it has been designed to pick randomly selected questions one by one. Here, you will be required to submit answers within the given time limit. In the end, you will see a list of right answers for cross-checking purposes. 

Who can join us?

  • Want to be a React.js Consultant
  • Seeking the React.js interview questions and answers
  • Aspiring to become React.js Developer
  • Wish to become React.js Front End Developer 
  • Need to appear for IT exam, online Assessment, Freelance Skill test
Free Sample Questions for React.js

Which Of the following is the correct signature of React testRenderer.update method that is used for re-rendering the in-memory tree with a new root element?


testRenderer.update(type, element)


testRenderer.update(element, type, Options)


How can you stop event propagation in React? (Check all that apply.)

With stopPropagation function.

With preventDefault function.

Returning false from the event handler.

All of the above.

With stopPropagation function.
With preventDefault function.

Note: This question has more than 1 correct answers