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ReactJS Online Test

The React.js Online Test is preferred by recruiters to assess on-the-job skills of candidates before an interview. It reduces technical screening time by 80% by enabling employers to identify qualified candidates.

Customized Based On:

  • Experience/ difficulty level
  • Multiple skills in 1 assessment
  • Job description/ role requirements

Topics:

Ref
State
LifeCycle
Methods
Props Overview
Forms
Using Flux
Web development
Data Binding
Portals
Events
See full list
Singapore government logo

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.


Human Resources Manager

Singapore Government

85%
reduction in screening time

Sample Adaface React.js Online Test Questions

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

🧐 Question🔧 Skill💪 Difficulty⌛ Time
Async Await Promises
What will the following code output?
 image
A: 24 after 5 seconds and after another 5 seconds, another 24
B: 24 followed by another 24 immediately
C: 24 immediately and another 24 after 5 seconds
D: After 5 seconds, 24 and 24
E: Undefined
F: NaN
G: None of these
Promises Async-Await
JavaScriptMedium2 min
Functional components
Consider the following React components: What are the benefits of this refactoring?
 image
A: Since Square doesn't have state, functional components are clean to maintain than class components
B: Transpiled code length of refactored code (OPTION 2) is greater than older code (OPTION 1) but it runs faster
C: It is easy to test refactored code since its a plain javascript function
D: There is a significant performance boost with refactored code since React optimizes functional components
ReactMedium2 min
Prototypes and Scope
What will the following code output?
 image
Prototypes
JavaScriptMedium2 min
Promise Resolve
What does the following code output?
 image
Promises Async-Await
JavaScriptEasy2 min
Throw, Try, Async
What does the following JS code output?
 image
Promises Async-Await
JavaScriptEasy2 min

How to use the Adaface React.js Online Test

Start screening candidates within minutes with the ready-to-go React.js Online Test

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

Customize the Adaface React.js Online Test according to your job description

1. Get a custom assessment from our library of 500+ skills within 48 hours

2. Start inviting candidates to complete the assesment

3. Receive real time notifications and shortlist the best candidates

Adaface React.js Online Test is trusted by enterprises worldwide

amazon
PayPal
Morgan Stanley
Adidas
SG Government
Neilsen
UCLA
Ernst and Young
Microsoft
WeWork
Bosch
Optimum Solutions
SAP
Doubtnut
Deloitte
HCL
FusionCharts
United Nations
Sokrati
Love Bonito
ZiMetrics
MTM

About the Adaface React.js Online Test

Evaluate ReactJS technical and coding skills with Adaface skills assessment platform powered by an intelligent chatbot

Topics:

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

Recommended Roles:

React.js Developer
JavaScript Developer – React.js
Front End Developer – React.js
React.js consultant
Web Developer

About This React Online Test

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

The React Online Test identifies candidates who have the following skills:

  • Experience building React applications
  • Solid knowledge of JavaScript
  • Excellent front-end coding skills
  • Deep knowledge of basic React assumptions
  • Performance optimisation skills
  • Familiarity with JS basics such as HTML 5, CSS 3, pre-processors
  • Understanding of progressive web applications

Why You Should Use This React Test

The React Online Test helps recruiters and hiring managers 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 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 Online Test is ideal for helping recruiters identify which candidates have the technical skills to do well on the job.

About React Job Roles

React Native is an open-source UI software framework created by Facebook, Inc. It allows you to build natively-rendered mobile apps for iOS and Android.

Typical responsibilities of a React Developer include:

  • Developing new user-facing features using React.js
  • Translating designs and wireframes into robust code
  • Developing and implementing front-end architecture to support the UI
  • Troubleshooting interface software and debugging application codes
  • Diagnose and fix bugs and performance bottlenecks for performance

The React Online Test is designed to filter out candidates for roles like:

  • React Developer
  • Frontend Developer

Distribution Of Test Scores

The actual score distributon will vary based on your candidate pipeline quality, but you should typically 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.

How Adaface Is Different

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

OLD WAY

TRADITIONAL TESTS

Theoretical questions/ puzzles

Feels like a test

One-size-fits-all assessments

😞
HIRE IN
Weeks/Months

NEW WAY

ADAFACE ASSESSMENTS

Questions for on-the-job skills

Conversational

Customized
assessments

😀️
HIRE IN
Days

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:

  • High quality non-googleable questions that test for on-the-job skills as opposed to theoretical knowledge.
  • 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)
  • Customized assessments for 700+ skills at different experience levels.
Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Web proctoring
  • Webcam proctoring
  • Plagairism detection
  • Non-googleable questions
  • Secure browser

Read more the proctoring features.

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. A skills assessment is optimized 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 55%, 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/ proctoring 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. However, you can use our sample questions for practice.

What is the cost of using this test?

You can check out our pricing plans.

Can I get a free trial?

The platform is completely self-serve, so here's one way to proceed:

  • You can sign up for free to get a feel for how it works.
  • The free trial includes one sample assessment (Java/ JavaScript) that you will find in your dashboard when you sign up. You can use it to review the quality of questions, and the candidate experience of a conversational test on Adaface.
  • To review the quality of questions, you can also review our public questions for 50+ skills here.
  • Once you're convinced that you want to try it out with real assessments and candidates, you can pick a plan according to your requirements.
I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!


Brandon Lee, Head of People, Love, Bonito

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