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React JS Certification Exam - Prove Your Expertise Now

Take the test at no cost and earn a free certificate—give it a try today!

About the React JS

Looking to assess your React JS skills before enrolling in a course? Our React JS Skill Test is the perfect way to evaluate your knowledge! This test allows you to gauge your understanding of core React JS concepts through a series of objective questions.

After completing the test, you’ll immediately see your score on the screen. Score 70% or higher, and you’ll earn a free React JS certificate — a valuable addition to your professional profile! You can proudly share your certificate link on social media platforms to showcase your achievement to friends and colleagues.

If your score falls short, don't worry — you can always retake the test and aim for success. Ready to take on the challenge and boost your career? Start now and see where you stand!

Instruction:

This is a FREE online test. Beware of scammers who ask for money to attend this test.

  • Total number of questions: 20.
  • Time allotted: 20 minutes.
  • Each question carries 1 mark; there are no negative marks.
  • Please do not refresh the page while participating in the test.
  • Good Luck.
  • Total questions:
    10
  • Answered:
    00
  • Unanswered:
    10
  • Minutes:
    20
  • Seconds:
    00
  • Question:
  • 01
  • To
  • 05
1
What is React.js?
2
Which of the following is used to create components in React?
3
What is the purpose of JSX in React?
4
What is the virtual DOM in React?
5
Which of the following is true about React state?
  • Goto next set of questions:
  • Next
6
What is the use of React's useState hook?
7
What is React PropTypes used for?
8
What is the purpose of React's useEffect hook?
9
What is React Router used for?
10
Which command is used to create a new React application?
11
What is a React fragment?
12
What is the purpose of the key prop in React?
13
Which of the following is a lifecycle method in React class components?
14
What does React's context API help with?
15
What is the purpose of React.memo?
16
What is the difference between a controlled and uncontrolled component in React?
17
Which of these is a common library used with React for state management?
18
What is the significance of the React key prop in dynamic lists?
19
Which method is used to update the state in a React class component?
20
What is the purpose of the React.createElement method?

Congratulations on completing the React JS test! We're excited to inform you that you've successfully completed the test.

We're thrilled to announce that you've successfully passed. You can now start your journey towards becoming a React JS expert. Your certificate is ready! Click below to download and share it on your social media profiles.

Thank you for taking the React JS test. . Although your score of 0% falls slightly short of the passing mark, don't let it discourage you! This is a stepping stone to success. Review the challenging topics, sharpen your skills, and you'll be earning that certificate in no time.