Gebruik onze React om de beste in te huren

Over de React test

React.js is a JavaScript library that allows front-end developers to build complex user interfaces and components for dynamic and engaging web applications. Some of the biggest websites and web applications, like Facebook, Instagram, Airbnb, and BBC use React.js due to its speed and stability. If you’re building a website or web application that needs to provide interactive data and information to visitors quickly and reliably, you need an experienced React.js developer on your team.

This React test evaluates candidates’ skills in the skills that a developer with 2-3 years of experience in the framework should be proficient in, such as advanced hooks, state management, design patterns, and some advanced concepts.

Candidates who score well on this test understand how React works and are able to implement any functionality no matter how complex it is by using the latest techs and tools offered by the library and following best practices set by the community.

De test wordt gemaakt door een materiedeskundige

Mohamed N.

Mohamed is een full-stack-ontwikkelaar met meer dan vier jaar ervaring die meewerkte aan het designen en implementeren van diverse progressieve webapplicaties, voornamelijk met React, Node.js en het Java-framework Spring. Zijn belangrijkste doelstelling bij elk project bestaat erin om snelle en toch veilige, hoogwaardige applicaties te ontwikkelen met een flexibele architectuur. Als hij geen nieuwe apps aan het ontwikkelen is, draagt Mohamed actief bij aan tal van opensourceprojecten. Hij heeft zijn eigen React- en Javascript-bibliotheken gepubliceerd.

Gemaakt met deskundige kennis

TestGorilla's tests worden gemaakt door materiedeskundigen. Wij beoordelen potentiële materiedeskundigen op basis van hun kennis, bekwaamheid en reputatie. Voordat elke test wordt gepubliceerd, wordt deze beoordeeld door een andere expert en vervolgens gekalibreerd met behulp van honderden testnemers met relevante ervaring in het onderwerp. Dankzij onze feedbackmechanismen en unieke algoritmen kunnen onze materiedeskundigen hun tests voortdurend verbeteren.

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Kijk hoe je de React test

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Bekijk een voorbeeldrapport

De React test wordt opgenomen in een PDF-rapport, samen met de andere tests van uw beoordeling. U kunt dit rapport eenvoudig downloaden en delen met collega's en kandidaten.

Recruiting programmers with a Reactjs coding test

React – or, as you will sometimes see it written, React.js or ReactJS – is an open-source JavaScript library that programmers use to build segments (parts) of the user interface (UI). One of the best ways to evaluate the skills of a Reactjs programmer is to give them a Reactjs coding test. This way, you can see if they have the required skills to operate in the Reactjs library.

TestGorilla’s pre-employment Reactjs coding test evaluates candidates on the most important concepts, such as:

Using props And proptypes
Optimizing performance in Reactjs apps
Creating DOM elements
Using JavaScript expressions as props

Using a Reactjs coding test as part of a pre-employment assessment that also evaluates candidates on soft skills and other technical skills can streamline your recruiting process and give you data-driven insights into your top applicants.

Why Reactjs is important

Reactjs was created by Facebook (now Meta) back in 2013 and has since become one of the most popular front-end JavaScript libraries for building web applications.

Its specific use lies in building user interfaces for single-page applications such as handling the view layer for web and mobile apps. With Reactjs, developers can create large web applications that can change data without reloading the page – this makes it a fast, scalable, and simple solution for many developers.

Most of the time, it’s used along with frameworks such as Angular and MVC.

Reactjs competencies for candidates

A candidate who wants to apply for a Reactjs open role in your company should have the following skills:

• HTML and CSS: Every Reactjs developer should know at least the basics of HTML and CSS. In fact, every front-end developer should base all of their advanced skills on knowing the basics such as HTML and CSS. At this level, your Reactjs developer should know about semantic HTML tags, CSS selectors, flexbox, and the proper use of media queries. You can test all of the HTML and CSS prerequisites with our HMTL and CSS pre-employment tests.

• JSX: Reactjs developers don’t really work in HTML, but in a similar ecosystem on React called JSX. But if the programmer knows how to operate in HTML and CSS, they will also know how to work in JSX, because these are quite similar.

• JavaScript fundamentals: Some of the elements the developer needs to be familiar with if they want to get a job as a Reactjs programmer are: variables and scoping, arrays and objects, arrow functions, constructor functions, callback functions, and children-parent objects.

• Git: Reactjs developers should have Git in their developer’s toolkit for storing projects and solutions on platforms such as GitHub and GitLab.

• Redux: This will be the distinguishing point between an entry-level and an experienced Reactjs developer. Redux is a state management library that helps developers work with data in the Reactjs library. Any programmer who knows their way around Redux has mastered the fundamentals of Reactjs.

But technical skills alone are not enough. The candidate needs to have the accompanying values and soft skills to ensure they are the perfect fit for your organization.

The right candidate

When recruiting, the best candidate for the position will have the following skills:

• Good and effective communication: Reactjs developers need to communicate effectively if they want to get anything done. Developers often do pair-programming and good communication is essential for working well with others.

• Analytical capabilities: The right candidate will have an analytical mindset, enabling them to focus on all the ways they can solve a problem or challenge. They will do this by analyzing the problem and looking at all the possible ways they could approach it to find a solution.

• Good time-management skills: Organizations operate to deadlines and it’s no different for Reactjs developers. They need to have good time-management skills so they can ensure that their work is completed on time.

• Learning ability: Programming languages change and they change fast, so if a developer doesn’t constantly learn and adapt, their skills will become outdated. Reactjs isn’t even ten years old.

• Attention to detail: Reactjs developers need to pay attention to the smallest details when writing their code, since even minor mistakes can cause system malfunctions.

• Teamwork: No person is an island and Reactjs developers aren’t an exception to this rule. The right candidate will need to know how to work with others in the team to succeed in their role.

• Problem-solving ability: The perfect candidate will have a “can-do” mindset, where they will observe a problem from multiple perspectives until they find a solution. So on top of their technical skills, the perfect candidate should also be a good problem-solver.

• Accountability: Reactjs programmers need to own their code and, as such, be accountable for their actions. Accountability is a great personal trait since the candidate will be aware of their responsibilities and make sure they don’t fail.

A practical way to see if candidates have the above skills is to use a Reactjs coding test. With pre-employment testing, you can evaluate applicants’ skills and focus on interviewing only the candidates who are best suited to the position.

How can a Reactjs coding test help recruiters hire?

Here are three key reasons why you should give applicants a Reactjs coding test to evaluate their skills:

• Bias-free: When you give your applicants TestGorilla’s pre-employment tests, they will only be scored on one thing – their skills. With CV screening, great candidates can slip through the cracks, because not every CV gets enough attention. But a pre-employment test ensures that the first part of your hiring process is bias-free since all the applicants will take and be graded on the same test.

• Objective: With a pre-employment test, you will receive a score for every candidate in your hiring process. On top of that, TestGorilla’s Reactjs coding test provides quantifiable results. This means you will receive the result as a number, which makes the hiring manager’s job easier because they can then easily compare candidates’ results.

• Simple to use: It makes no difference if you give out 50 or 250 of our pre-employment assessments. The hiring manager will simply distribute them with a single click. This makes pre-employment testing a simple, scalable way om aan te nemen.

In summary

Why should you use a Reactjs coding test to recruit developers? Once you have specified the role’s requirements, a pre-employment test can help you to screen applicants without once looking at a CV. As part of a larger assessment, the Reactjs coding test helps you to find the best candidate for the position by exploring detailed reports and watching their personalized videos.

Finally, skills tests streamline the recruiting process and cut down on time dedicated to sifting through resumes and conducting interviews. Using skills tests like an Reactjs coding test in combination with other human-resources best practices makes your recruitment process more effective and efficient, leaving both you and the candidate with a positive experience.


What is the difference between an assessment and a test?
An assessment is the total package of tests and custom questions that you put together to evaluate your candidates. Each individual test within an assessment is designed to test something specific, such as a job skill or language. An assessment can consist of up to 5 tests and 20 custom questions. You can have candidates respond to your custom questions in several ways, such as with a personalized video.
Can I add my own questions to an assessment?
Yes! Custom questions are great for testing candidates in your own unique way. We support the following question types: video, multiple-choice, coding, file upload, and essay. Besides adding your own custom questions, you can also create your own tests.
How do video questions work?
A video question is a specific type of custom question you can add to your assessment. Video questions let you create a question and have your candidates use their webcam to record a video response. This is an excellent way to see how a candidate would conduct themselves in a live interview, and is especially useful for sales and hospitality roles. Some good examples of things to ask for video questions would be "Why do you want to work for our company?" or "Try to sell me an item you have on your desk right now." You can learn more about video questions here.
Can you explain how the other custom question types work?
Besides video questions, you can also add the following types of custom questions: multiple-choice, coding, file upload, and essay. Multiple-choice lets your candidates choose from a list of answers that you provide, coding lets you create a coding problem for them to solve, file upload allows your candidates to upload a file that you request (such as a resume or portfolio), and essay allows an open-ended text response to your question. You can learn more about different custom question types here.
Can I customize an assessment with my company logo and color theme?
Yes! You can add your own logo and company color theme to your assessments. This is a great way to leave a positive and lasting brand impression on your candidates.
What type of support do you offer?
Our team is always here to help. After you sign up, we’ll reach out to guide you through the first steps of setting up your TestGorilla account. If you have any further questions, you can contact our support team via email, chat or call. We also offer detailed guides in our extensive Help & Inspiration Center.
What is the cost for using the React test?
You can find our pricing packages here. Sign up here to try TestGorilla today.
Can I combine the React test with other tests?
Yes. You can add up to five tests to each assessment.
Where in my recruitment process should I use the React test?
We recommend using our assessment software as a pre-screening tool at the beginning of your recruitment process. You can add a link to the assessment in your job post or directly invite candidates by email. TestGorilla replaces traditional CV screening with a much more reliable and efficient process, designed to find the most skilled candidates earlier and faster.

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