JavaScript Test

Javascript tests are designed to assess a candidate's understanding and proficiency with JavaScript language.


What is a JavaScript test?

A JavaScript test assesses a candidate’s overall JavaScript coding skills. The test requires applicants to interpret code and solve common issues and is ideal for testing the competency of entry-level developers.

A candidate’s performance on the test can be compared to other applicants to distinguish those who are qualified for the role and those who don’t quite fit the bill. A high score indicates a candidate holds a strong understanding of the JavaScript language and has the potential to apply those skills on the job.

A JavaScript test can be coupled with other coding and skills tests, to give a fuller picture of a prospective employee’s technical strengths. It can also be combined with personality or aptitude tests to provide a holistic view of each candidate.

About the JavaScript Test

Proficiency in JavaScript is essential for most developers, as it enables interactive web pages and forms the basis of web applications. Nearly all web pages contain JavaScript, as it is used in both front-end and back-end web development and is central to the creation of mobile apps and games.

It is the foundation for web frameworks such as Angular, Vue, Ember and React. These frameworks are very popular.

Due to its core use for a variety of functions across the web, evaluating a junior developer’s JavaScript skills is a useful early step in the recruitment process.

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Why should you use a JavaScript test for recruiting?

A strong knowledge of the foundations of coding, such as JavaScript, is invaluable for entry-level developers. An applicant’s resume gives an insight into their programming experience – and may list key skills – but only a practical test can confirm the level of those skills.

Developers who can display competency in basic coding skills are likely to take to their new roles faster, absorbing new skills and adapting to the needs of the workplace.

Online skills testing, tailored to the strengths required for a job vacancy, is an excellent way of streamlining the recruitment process, making objective hiring decisions, and avoiding unintended bias.

Sample JavaScript Test question

var values = [10,20,30,40,100]; 
var result = values.reduce(function(prev, cur, index, array){  
    return prev + cur; 

Which of the following would be the value of the result when the below statements are executed?

  • 50

  • 90

  • 100

  • 200

View a sample report

Results for the JavaScript Test along with other assessments the candidate takes will be compiled to produce a candidate report.

The report is automatically generated and available both online and as a downloadable pdf so they can be shared with other team members and employees alike.

Neuroworx Sample Report

How our test assesses JavaScript skills

In Neuroworx’s JavaScript test, candidates will need to answer a range of questions targeting an intermediate level of proficiency, from demonstrating their understanding of the JavaScript language and architecture to their skills in using it in front-end and back-end development.

The test is designed to indicate how well a candidate understands JavaScript based on a final test score, which can then be compared to the scores of other applicants.

The multiple-choice questions consist of one correct answer and two-to-four distractors. The distractors are mostly generic mistakes or misconceptions, which makes the test challenging and helps measure a candidate’s proficiency more accurately.

During the development process, the test was rigorously analysed to maximise reliability and validity in line with industry best practices. It was created and reviewed by programmers and psychometric experts, and field-tested with a representative sample of job applicants who have varying JavaScript experience, just like you might find in a talent pool.

Each test is reviewed by a panel of individuals representing diverse backgrounds to check for any sensitivity, fairness, face validity and accessibility issues. This ensures each programmer has a fair chance of demonstrating their true level of JavaScript proficiency and feels the test is of high quality.

Our programming tests are monitored to ensure they are up-to-date and optimised for performance.


Predictor of job success

Neuroworx provides evidence-based recommendations for tests to use for over 750 jobs. Our recommendation engine leverages data from the Occupational Information Network (O*NET) developed by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA).


Access real assessments

Instant access to our full testing suite.

  • Fully accredited

    All our JavaScript tests are written by accredited psychologists and fully validated.

  • For all levels

    We offer JavaScript tests for all levels so you can assess all roles within your organisation.


Energize selection process

Streamline hiring with our out-of-the-box tools.

  • Smart automations

    Automated actions such as alerts and reminders ensure a smooth candidate experience.

  • Instant results

    Receive candidate results in real-time so you can make decisions in hours, not days.


Make better hires

Improve hiring with bias-free, data-driven decisions.

  • Analytics dashboard

    Our full array of candidate performance metrics will provide actionable data on each of your candidates.

  • Candidate comparison

    Simple, easy-to-use candidate comparison reports mean you don’t need to be a psychologist to interpret them.


You’re in good company

Provides all the data and high-level metrics we need to make fast hiring decisions. Neuroworx has been particularly helpful in scaling our operations since we moved to remote working.

Greg, CEO, Reverse Media Group, Australia
Greg, CEO, Reverse Media Group, Australia

Focusing on data reduced the subjective decision making from our hiring process and allowed us to reduce bias and make better hiring decisions.

Izzie, Head of HR, iZettle, Sweden
Izzie, Head of HR, iZettle, Sweden

We used Neuroworx as part of our Finance Graduate Scheme recruitment and it was just what we needed – really simple to send candidates the link to complete and clear to see how they all compared. And great value for money!

Christina, HR Director, Cancer Research, UK
Christina, HR Director, Cancer Research, UK


Curated by our team of experts

Scientifically validated by psychometric specialists

  • Our team of assessment experts is made up of I/O psychologists, psychometricians, and subject matter experts who work closely together to ensure each test is accurate and reliable.
  • Our subject matter experts are rigorously vetted and typically have several years of experience working in their industries and hold advanced credentials.

JavaScript Test FAQs

When in the application process is it best to use a JavaScript test?

The test can be easily administered after submission of an initial application form by sending candidates a link to complete the online exercise. It can also be used as part of a later-stage assessment centre, alongside other online and practical skills assessments.

How popular is JavaScript?

JavaScript is one of the most popular programming languages. It is used to create web features to allow visitor interaction, such as animated images, carousels, prompts, and alerts. It is also used with back-end frameworks to power operations, such as processing payments and form submissions.

Can I try the test for free?

Yes, simply sign up (no credit card is required) and we’ll give you unlimited access for 7 days. Create as many jobs and test as many candidates as you want; you won’t be charged a penny.

What is the fee for Neuroworx’s JavaScript test?

Neuroworx offers monthly or annual subscriptions for businesses of all sizes, so choose the one that best fits your needs. You can also contact us to discuss the possibility of a custom plan suited to your specific requirements. You can check out our subscription plans here.

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