React.js Online Test

Topics covered

Mounting Method, Render Function
Password Principles, Component Optimize
Default Values for Properties
Handling Events, React Facts

  • MAQ (Multiple Answer Question)
  • MCQ (Multiple Choice Question)
  • Descriptive Question
  • White Board Simulator
  • Coding Simulator
  • Audio Question
  • Video Question
  • Case Study Question

React.js is an open-source JavaScript library used for building reusable UI components which present data which changes over time. React.js allows developers to create large web-applications that use data and can change over time without reloading the page. It aims primarily to provide speed, simplicity, and scalability. React processes only user interfaces in applications.

React.js online test is created & validated by experienced subject matter experts (SMEs) to assess React.js skills of candidates as per industry standards. Online React.js test helps recruiters and hiring managers to evaluate the expertise of candidates in creating interactive UIs using React.js.

The React.js assessment test helps to screen the candidates who possess traits as follows: 

  1. Knowledge of core web fundamentals: HTML, JavaScript, and CSS
  2. Thorough understanding of React.js and its core principles
  3. Experience with popular React.js workflows (such as Flux or Redux)
  4. Experience with data structure libraries

Our React.js skills test reports will give a detailed analysis of each candidate and will provide the analytical data which helps you to hire better and faster. To know about the candidate experience, we have introduced the new feature called candidate feedback module in our React.js pre-employment test so that it will ensure you that the candidates are getting an excellent experience while attempting the test.

This pre-employment test is useful for hiring:
  • React.js Developer
  • JavaScript Developer – React.js
  • Front End Developer – React.js
  • React.js Consultant
  • Fullstack Developer – React.js

Test details:

The React.js online test enables employers and recruiters to identify potential prospects by evaluating working skills and job readiness. For this reason, the emphasis is laid upon evaluating the knowledge of applied skills gained through real work experience, rather than theoretical knowledge.

The online React.js test may contain MCQs (Multiple Choice Questions), MAQs (Multiple Answer Questions), Fill in the Blank, Descriptive, Whiteboard Questions, Audio / Video Questions, True or False.

Test Duration: 20 minutes

10 Application Questions

React.js Online Test

Question #1 of 2

How to create a component with multiple elements and no parent?

Note: There can be multiple correct answers to this question.

    • const Fruits = props => [
      <div key="apple">Apple</div>,
      <div key="orange">Orange</div>

    • const Fruits = props => (
      <div key="apple">Apple</div>
      <div key="orange">Orange</div>

    • const Fruits = ['Apple', 'Orange'].map(fruit => <div key={fruit}>{fruit}</div>);

Question #2 of 2

How does React handle Web Accessibility Initiative - Accessible Rich Internet Applications (WAI-ARIA) standard?

    • aria-* HTML attributes are fully supported in JSX. Where most DOM properties and attributes in React are camelCased, these attributes should be lowercased

    • aria-* attributes should be converted to camelCase like other attributes eg. className, onChange and so on

    • React processes aria-* attributes separately and update the DOM for accessibility if the user requires it

    • React is yet to support WAI-ARIA standard

Candidate Name
Assessment Name
Invited by
Assessment Date
IP Address

24.00 Out of 40.00
23 Minutes

Java EE




Oracle PL/SQL


Analytical Thinking


Note:If score<= 30% then its a Weakness. If score >=70% then its a Strength.


Java EE, Oracle PL/SQL, Analytical Thinking




It was a good test for me, the questions were on the latest technology of java on which I am currently working. It was a great experience. Thank you!

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