React JS Online Test

React JS Online Test

Evaluate aptitude, technical and coding skills with Adaface skills assessment platform powered with an intelligent chatbot

Evaluate aptitude, technical and coding skills with Adaface skills assessment platform powered with an intelligent chatbot
  • amazon
  • paypal
  • UCLA
  • lovebonito
  • singapore-government
  • nielson
  • adidas

Sample Questions

Sample Questions

These are just a small sample from our library of 10,000+ questions. The actual questions on this test will be non-googleable.

🧐 Question 🔧 Skill 💪 Difficulty ⌛ Time
Functional components - Consider the following Reac...
React Medium 2 min
React
Functional components
Functional components
Duration ⌛
Difficulty 💪
: 2 mins
: Medium

Consider the following React components: What are the benefits of t...

View Question

“随着Adaface,我们能够通过向上的75%,以优化我们的初步筛选过程中,腾出宝贵的时间都为招聘经理和我们的人才团队收购一样!”


- 李国豪,人的头部,爱,鲣鱼

Start using conversational React JS Online Test for the most accurate and candidate friendly screening today
Start using conversational React JS Online Test for the most accurate and candidate friendly screening today
💼
Customized assessments for every experience level
Customized assessments for every experience level

Customized by subject matter experts to cater to job roles for all experience levels (fresh grads to 8-10 years) within your organization.

💯
Higher test taking rate compared to traditional tests
Higher test taking rate compared to traditional tests

Adaface assessments have an average test taking rate of 86% as compared to an industry standard of 50%.

🎯
Accurate evaluation using on-the-job, non-tricky questions
Accurate evaluation using on-the-job, non-tricky questions

Adaface assessments have relevant questions that test for on-the-job skills. We do not expect candidates to solve puzzles/ trick questions.

Sample Coding Conversation with Ada

Java JavaScript C++ C C# PHP Python React Angular Django Android iOS SQL MySQL HTML/CSS NodeJS Excel Data Interpretation Logical Reasoning Quantitative Aptitude Check out 700+ skills

Get a detailed scorecard with section wise breakdown and a pass/ fail recommendation

Get a detailed scorecard with section wise breakdown and a pass/ fail recommendation

Trusted by companies worldwide

Trusted by companies worldwide

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- 人力资源经理,新加坡政府

Everything you need to know about React JS Online Test 👇

Everything you need to know about React JS Online Test 👇

Adaface React.js Test will be customized to accurately evaluate on-the-job skills required for your role. This assessment test is useful when you are hiring candidates for roles like - React.js Developer, JavaScript Developer – React.js, Front End Developer – React.js, React.js consultant, Web Developer.

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

About This Test

React online test is designed and validated by industry experts to help tech recruiters and hiring managers assess React and JavaScript programming skills of candidates. Top tech companies use our React Online test to reduce candidate screening time by 85%.

The test is designed to filter out candidates for roles like:

  • React Developer
  • Junior React Developer
  • JavaScript Developer
  • UI/UX Developer
  • Frontend Developer
  • Senior Frontend Developer
  • Web Developer
  • Full stack Developer

The test identifies candidates who have the following skills:

  • Excellent knowledge of frontend programming languages and related frameworks
  • Thorough understanding of React.js and its core principles
  • Deep knowledge of server-side scripting knowledge and interfacing
  • Knowledge of advanced libraries such as ReactJs, KnockoutJs, AngularJs, VueJs, SvelteJs
  • Familiarity with core JS concepts such as asynchronous request handling, AJAX, DOM
  • Knowledge of data structure libraries
  • Familiarity with JS developer basics such as HTML 5, CSS 3, pre-processors
  • Experience with writing unit and functional tests
  • Experience designing cross-browser and cross-device compatible UI
  • Ability to write reusable code

Why You Should Use This Test

The React Online test helps recruiters and hiring managers to identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves expensive engineering time by filtering out unqualified candidates.

The Adaface tests screen candidates for the typical skills recruiters look for in a React developer:

  • Comprehension of basic React assumptions
  • A solid knowledge of JavaScript
  • Understanding of Component lifecycle, Higher-order components, React state and setState, React context
  • Experience working with Redux

The insights generated from this assessment can be used by recruiters and hiring managers to identify the best candidates for the role. Anti-cheating features enable you to be comfortable with conducting assessments online. The React developer test is ideal for helping recruiters identify which candidates have the technical skills to do well on the job.

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Questions/ Topics in this Test

The React Online test will consist of ~15 MCQs, 1 coding challenge and 1 debugging challenge crafted by experts in JavaScript and React and will cover a broad spectrum of topics within React.

The exact number of questions and the topics will be chosen based on your job description and developer persona. Here is a list of topics for reference:

ES5 ES6/ ES7 HTML/CSS Mounting Method
Render Function Password Principles Component Optimize Default Values for Properties
Handling Events React Facts Storage Router
Ref Events Function Rendering
State Component ReactJS Basics React Basics
LifeCycle React Installation Webpack/ Browserify React Events
Methods React DOM props in React JSX
Props Overview Props Validation Component API Component Life Cycle
Forms Events Keys Flux Concept
Using Flux Animations Ajax Redux
Web development Conditional Rendering VDOM Component Life Cycle
Data Binding State Hook Effect Hook Reducer Hook
Portals Managing State Content Manipulation Higher Order Components

Frontend Engineer tests

You can combine multiple skills relevant to your Job description into a single custom Adaface JavaScript test. Here are some popular combinations for frontend roles. 

React JS + Javascript + NodeJS React JS + Javascript
React JS + Javascript + NodeJS + HTML/CSS React JS + Redux + Javascript + NodeJS + HTML/CSS

Fullstack Engineer tests

You can combine multiple skills relevant to your Job description into a single custom Adaface JavaScript test. Here are some popular combinations for fullstack roles. Read more about how we design custom tests.

React + JavaScript + SQL React + JavaScript + MySQL React + JavaScript + PostgreSQL React + JavaScript + Java + + Spring React + JavaScript + Java + Spring + SQL
React + JavaScript + Java + SQL React + JavaScript + Java + MySQL React + JavaScript + Java React + JavaScript + Python + Django React + JavaScript + Python + Django + SQL
React + JavaScript + PHP React + JavaScript + PHP + Laravel React + JavaScript + PHP + SQL React + JavaScript + PHP + MySQL React + JavaScript + PHP + Laravel + SQL

Score Distribution

You should expect ~20% of the candidates to do well on Adaface assessments.

The score distribution for our assessments follow the normal curve. This is a good sign- standardized tests like SAT and GRE follow the normal distribution (bell curve).

Status quo assessments typically have the exact opposite of the bell curve (too many candidates getting close to 0, too many candidates getting close to 100 and too few candidates in the middle). This is typically because they focus on theoretical questions or trick questions, which are very binary in nature- either you know the trick/ theory or you don’t.

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FAQs

What is a custom assessment?

Every role is different and requires a custom assessment to identify top candidates efficiently. Adaface subject matter experts understand your job description/ role requirements and pick the most relevant questions from our library of 10000+ questions to create a technical assessment that helps you find the qualified candidates in your candidate pipeline quickly. All custom assessments are set up based on the job description, role requirements, must-have skills, experience level and salary range within a maximum of 48 hours and you will get an email notification once it goes live.

Check out a sample assessment here (no credit card required).

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify.

How is Adaface different from other assessment tools?

We believe that status quo tech assessment platforms are not a fair way for companies to evaluate engineers because they focus on trick questions/ puzzles/ niche algorithms. We started Adaface to help companies find great engineers by assessing on-the-job skills required for a role. Read more about why we started Adaface.

Here's what's different with Adaface:

  1. High quality non-googleable questions that test for on-the-job skills as opposed to theoretical knowledge.
  2. A friendly conversational assessment with a chatbot, instead of sending a "test" to a candidate. This translates to a higher completion rate. Adaface assessments (86% candidate completion rate), as opposed to traditional tests (40-50% candidate completion rate)
  3. Customized assessments for 700+ skills at different experience levels.
Do you have any anti-cheating features in place?

We have the following anti-cheating features in place:

  1. Web proctoring
  2. Webcam proctoring
  3. Plagairism detection
  4. Non-googleable questions
  5. Secure browser

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. As in an assessment is optimizing to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 60%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment.

What is the cost for using the React.js Test?

You can check out our pricing plans here.

Can I get a free trial?

You can sign up for free and check out the platform here. The dashboard has a sample assessment for you to review the quality of questions and check out the candidate experience of a chat based assessment. Since our questions are premium, we are unable to share sample questions for a particular skill/ technology. You can also review our sample public questions here.

I just moved to a paid plan. How can I request a custom assessment?

Check out our quick guide on requesting a custom assessment here.

About The Role

React is a declarative, efficient, and flexible JavaScript library for building user interfaces. React combines the speed of JavaScript and uses a new way of rendering webpages, making them highly dynamic and responsive to user input. 

The team behind React managed to increase the speed of updates by using virtual DOM. Unlike other frameworks that work with the Real DOM, ReactJS uses its abstract copy – the Virtual DOM. Another advantage that Facebook introduced with React is the ability to reuse code components of a different level anytime, another meaningful time-saving effect.

Typical responsibilities of a React Developer include:

  • Developing new user-facing features using React.js
  • Developing new client-side ReactJS components for modern web and mobile applications
  • Building reusable components and front-end libraries for future use
  • Translating designs and wireframes into high quality code
  • Optimizing components for maximum performance across a vast array of web-capable devices and browsers
  • Improving product quality through code reviews, write effective unit tests and collaborate with Q&A to implement automation testing
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Interview Questions

Candidates who pass Adaface React Online test can be taken for second round interviews. Here are top React interview questions for your reference.

How do I use this?
How do I use this?

Start screening within minutes with Adaface ready-to-go tests

Start screening within minutes with Adaface ready-to-go tests

1. Choose the most appropriate test for your role

2. Start inviting candidates to complete the assessment

3. Receive real time notifications and shortlist the best candidates

OR

Customize the test with multiple skills/ seniority levels according to your job description

Customize the test with multiple skills/ seniority levels according to your job description

1. Get a custom assessment from our library of 700+ skills within 48 hours

2. Start inviting candidates to complete the assesment

3. Receive real time notifications and shortlist the best candidates

What Are Conversational Assessments
What Are Conversational Assessments

Conversational assessments are the most candidate friendly way to get insights into a candidate's on-the-job skills and suitability for a role, while providing for a delightful candidate experience. Candidates love conversational assessments because they are fast, intuitive and feel like an interview rather than a test.

traditional assessments cons

Tired of traditional assessments with trick questions and low completion rates?

conversational assessments pros

Adaface conversational assessments are reflective of on-the-job skills and see an 86% completion rate as compared to ~50% for traditional assessment platforms.

Test multiple skills in a single assessment customized for your job description
Test multiple skills in a single assessment customized for your job description
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