JavaScript coding interview questions and tests

JavaScript is a must-have for every front-end developer. The tasks of the front-end developer nowadays require using a wide range of tools and knowing multiple programming languages. You can check the skills of your candidate using our JavaScript coding interview questions and tests to have a good understanding of how proficient they are.

The developer has to combine the knowledge of JavaScript with at least one of the popular frameworks like Angular, React or Vue. With DevSkiller JavaScript coding test interview questions and tests you can identify developers with the exact skill set you need to grow your company.

JavaScript Coding test Interview Questions:

Programmeringssprog: JavaScript

Java-rammer og -biblioteker: Angular, AngularJS, React, Ember, Backbone, Meteor, jQuery and others

Byg værktøjer: NPM, Gulp, Bower

Angular 2+
SENIOR
Testede færdigheder
Varighed
53 minutter max.
Evaluering
Automatisk
Testoversigt

Huller i koden

vurdering af viden om Angular2+, JavaScript

Spørgsmål efter valg

vurdering af viden om HTML

Programmeringsopgave - Niveau: svær

JavaScript | Angular 2+ | Router Rollebaseret adgangskontrol - Forbered en simpel RBAC for ruter og komponenter.

Vue.js
MIDDLE
Testede færdigheder
Varighed
70 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om JavaScript, Vue.js

Programmeringsopgave - Niveau: Medium

JavaScript | Vue.js | Contact Form - Færdiggør formularen, så den har alle følgende funktioner: brugeren kan logge ind, så navn og e-mail udfyldes, og efter at formularen er sendt, skal der vises en "Tak"-meddelelse.

TypeScript
MIDDLE
Testede færdigheder
Varighed
65 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om Typeskrift

Programmeringsopgave - Niveau: Medium

TypeScript | Redux Selectors | HR-afdeling - Implementer Redux Selectors, der behandler HR-data. Implementeringen vil blive testet i forhold til snapshot-tests.

Vue.js
JUNIOR
Testede færdigheder
Varighed
65 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om JavaScript, HTML, CSS

Programmeringsopgave - Niveau:

JavaScript | Vue.js | Kalendernoter - Implementer en applikation, hvor brugeren kan tilføje en note til en dato, som han/hun vælger fra en kalender.

Vinkelformet
JUNIOR
Testede færdigheder
Varighed
58 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om Angular2+, JavaScript, rxjs

Programmeringsopgave - Niveau:

JavaScript | Angular 2+ | Virtuel forretningskortholder - Forbind komponenterne i den virtuelle kortholder ved hjælp af en tjeneste, RxJS og Angulars @Input.

React
MIDDLE
Testede færdigheder
Varighed
113 minutter max.
Evaluering
Automatisk
Testoversigt

Programmeringsopgave - Niveau: svær

JavaScript | React, Redux | Adressebog - Implementer manglende funktioner i en lille React-webapplikation bygget oven på Redux.

Programmeringsopgave - Niveau: Medium

JavaScript | Node.js | Adressebog - Implementer endpoints til at hente listen over kontakter (med en fase matching og begrænsning af resultaterne), hente detaljer om en enkelt kontakt og slette den givne kontakt.

Huller i koden

vurdering af viden om MongoDB

Java
JUNIOR
Testede færdigheder
Varighed
120 minutter max.
Evaluering
Automatisk
Testoversigt

Front End-programmeringsopgave - Niveau: Let

JavaScript | TypeScript | Fakturaapplikation - frontend - Implementer frontend-delen til sammenlægning og aggregering af fakturadata med valutakurser.

Back End programmeringsopgave - Niveau: Let

Java | Fakturaapplikation - backend - Implementer backend-delen til søgning og aggregering af fakturadata med tjenesten og DAO-metoderne.

JavaScript
SENIOR
Testede færdigheder
Varighed
57 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om ES6, JavaScript, HTML, CSS, Tilgængelighed

Programmeringsopgave - Niveau: svær

JavaScript | Funktionel memoisering - Skriv de to versioner af den generiske memoiseringsmekanisme.

Vinkelformet
JUNIOR
Testede færdigheder
Varighed
44 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om Angular2+, JavaScript

Huller i koden

vurdering af viden om Angular2+, JavaScript

Programmeringsopgave - Niveau:

JavaScript | Angular 2+ | Valutaberegner - Færdiggør en applikation, der skal konvertere et beløb i den valgte valuta til USD.

Redux
JUNIOR
Testede færdigheder
Varighed
35 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om JavaScript, Redux

Programmeringsopgave - Niveau:

JavaScript | Redux | HR Department - reducers - Implementer redux reducers og selektorer korrekt.

JavaScript
SENIOR
Testede færdigheder
Varighed
46 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om ES6, JavaScript

Programmeringsopgave - Niveau: svær

JavaScript | Funktionel memoisering - Skriv de to versioner af den generiske memoiseringsmekanisme.

TypeScript
SENIOR
Testede færdigheder
Varighed
105 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om Typeskrift

Programmeringsopgave - Niveau: svær

TypeScript | Social Media Queries | Find venner efter navn - Implementer funktionen FriendsQueries#queryByNameMatching i henhold til kravene og få alle test til at bestå.

React
SENIOR
Testede færdigheder
Varighed
175 minutter max.
Evaluering
Automatisk
Testoversigt

Front End-programmeringsopgave - Niveau: Senior

JavaScript | React, Redux | Adressebog - Implementer manglende funktioner i en lille React-webapplikation bygget oven på Redux.

Backend-programmeringsopgave - Niveau: Medium

JavaScript | Node.js | Adressebog - Implementer endpoints til at hente listen over kontakter (med en fase matching og begrænsning af resultaterne), hente detaljer om en enkelt kontakt og slette den givne kontakt.

React
JUNIOR
Testede færdigheder
Varighed
35 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om JavaScript, React

Programmeringsopgave - Niveau:

Javascript | React | Kalendernoter - Implementer en applikation, hvor brugeren kan tilføje en note til en dato, som han/hun vælger fra en kalender.

JavaScript
JUNIOR
Testede færdigheder
Varighed
35 minutter max.
Evaluering
Automatisk
Testoversigt

Huller i koden

vurdering af viden om JavaScript

Programmeringsopgave - Niveau:

jQuery | DOM-manipulation - grundlæggende formular - Implementer en interaktiv formular, der gør det muligt at redigere og beregne simple statistikker.

JavaScript
MIDDLE
Testede færdigheder
Varighed
51 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om JavaScript

Programmeringsopgave - Niveau: Medium

jQuery | DOM-manipulation - Implementer interaktiv formular for at muliggøre redigering, bekræftelse af opgaver, deaktivering af input og beregning af statistik.

React Native
SENIOR
Testede færdigheder
Varighed
108 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om ES6, JavaScript

Programmeringsopgave - Niveau: svær

React Native | Movie Store - Implementer en applikation, der giver brugerne mulighed for at købe alle de film, de kan forestille sig.

JavaScript
JUNIOR
Testede færdigheder
Varighed
35 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om JavaScript, React

Programmeringsopgave - Niveau:

JavaScript | React | Search-Engine Application - Implementer en applikation til at søge og filtrere produkter i en online shop.

Vinkelformet
MIDDLE
Testede færdigheder
Varighed
72 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om Angular Forms API, Angular reaktive formularer, Angular2+, Angular-skabeloner, Angular Sikkerhed

Programmeringsopgave - Niveau: Medium

JavaScript | Angular 2+ | Signup Form - Forbind HTML/CSS med Angular og tilføj korrekt validering.

React Native
MIDDLE
Testede færdigheder
Varighed
101 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om ES6, JavaScript

Programmeringsopgave - Niveau: Medium

React Native | HR Companion App - Implementer en applikation til at hjælpe HR-afdelingen med at vedligeholde listen over jobkandidater, der skal evalueres.

React Native
JUNIOR
Testede færdigheder
Varighed
70 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om ES6, JavaScript

Programmeringsopgave - Niveau:

React Native | Ultimate BugTracker - Implementer manglende funktioner og løser fejl i applikationen, der bruges som intern fejlfinding i et softwarehus.

JavaScript
JUNIOR
Testede færdigheder
Varighed
56 minutter max.
Evaluering
Automatisk
Testoversigt

Spørgsmål efter valg

vurdering af viden om ES6, JavaScript

Programmeringsopgave - Niveau:

JavaScript | Orders Analyzer | Find en samlet bestilt mængde af et produkt for hver ugedag - Implementer OrdersAnalyzer#averageDailySales-metoden, der returnerer et kort med et navn på en ugedag som nøgle og en sum af den bestilte mængde for et givet produkt-id som værdi.

The best JavaScript programming questions for a JavaScript software developer:

Recommended roles for JavaScript developers include:

  • Webudvikler
  • Full stack-udvikler
  • Front end-udvikler
  • WordPress-udvikler
  • Full stack engineer
  • Junior webudvikler
  • Junior front end-udvikler
  • Front end engineer
  • JavaScript Developer
  • Mean stack developer
  • React developer
  • Angular developer

How our online JavaScript tests and JavaScript coding questions work

Using the RealLifeTesting™ methodology, DevSkiller’s online JavaScript coding interview questions help put your candidate in a natural environment to examine their coding skills. Give them access to all the tools they need to complete a range of tasks that they’d face regularly as a developer in your company.

Create deadlines and build a range of scenarios and tasks to help measure and assess your candidates’ problem-solving and technical thinking. Pick from JavaScript coding interview questions in React, Angular, or just about any other resource in the JavaScript tech stack.

Vigtigste funktioner

  • JavaScript coding interview questions assess candidates’ JavaScript coding skills in an environment you’ve designed and measure their coding abilities, rather than academic merit
  • Test JavaScript developers with JavaScript coding interview questions anywhere in the world at any time of day
  • A natural coding environment where your candidate has access to all the tools they have available in the job you’re hiring for
  • Automatically create a report that’s easy to read and comprehend for non-technical recruiters
  • Verify the integrity of your candidate’s work in our JavaScript programming questions with robust and complex plagiarism controls

What to look for in JavaScript Developers

JavaScript is one of the most widely used languages out there, regularly being used in both front-end and back-end applications. Even the most basic knowledge of the language can change the entire behavior of an entire website. However this is as a recruiter, you need to be aware. Many JavaScript developers learn JavaScript to problem solve, so the underpinning knowledge is lacking.

To code to a high standard, a JavaScript developer must have a comprehensive knowledge of the entire language and what it can and can’t do. One must also have knowledge and experience of the specific libraries and frameworks that the role requires – of which there are many, each being suited to different applications. This is exactly what DevSkiller JavaScript programming questions test.

Kan du ikke se det, du ønsker?

Can’t find the ideal JavaScript test with the right JavaScript programming questions to give to your applicants? No problem. Our task wizard lets you create your own JavaScript coding test and JavaScript coding test interview questions using your very own resources. Throw your developer into the world of jQuery, React, Angular and many many more applications. Test your candidates at any time from anywhere in the world.

Want proof that our JavaScript coding interview questions and tests really work?

It is understandable to be a little hesitant before committing your company’s money to our screening tool. After all, what assurances do you have that our JavaScript coding tests are what your company needs to help with its recruitment? Don’t take our word for it, read what our clients have had to say about their experience using our screening tool:

Jonatan Rugarn - CEO, stifter, Recruiter hos Lingonberry Talent Acquisition, Engineering Manager hos Avinode Group

“The duration of the recruitment process has not changed, but we spend less time and effort per candidate. We also don’t waste time on the wrong candidates.

Michael Gerwig - Teknisk chef hos Ada Health

"DevSkiller hjalp os med at spare kostbar tid på stedet for ansøgere, der allerede nu er sandsynlige at passe ind. Vi sparer 3 timer pr. kandidat - det var den tid, vi før brugte med ansøgere på en teknisk opgave."

Ivana Nikolic - HR-chef hos ImpacTech

"Den største fordel for kandidaterne er, at de kan gennemføre prøverne, når det passer dem bedst. Hvis du har en kandidat, der allerede er i arbejde og overvejer at skifte karriere eller flytte til en anden virksomhed, er det også en tidsbesparelse for dem, da de ikke behøver at tage fri for at deltage i mange samtaler i jagten på en ny stilling."

Ofte stillede spørgsmål

What’s the duration of JavaScript coding interview questions and tests?

The duration of each JavaScript test is really up to the recruiter to decide. Test lengths are flexible and can be changed to fit your preferences. You have DevSkiller’s default settings to choose from or can set a custom duration.

How do the candidates feel about our JavaScript coding interview questions and tests?

One of the reasons we are so confident in our screening tool is the feedback we have had from developer candidates after taking our tests. Candidates regularly tell us they love having the chance to prove their actual software development skills for a change.

Developer candidates often dislike traditional coding tests, because they have to remember algorithms they simply don’t use in their everyday work. These don’t reflect their actual skills on the job. DevSkiller testing is different and developers appreciate the chance to use normal coding tools and conventions. They can run unit tests, and clone their projects to GIT from their personal IDE, just like in their real work. Our tests better reflect the work developers actually do and they appreciate being given that chance.

How do candidates take JavaScript coding tests?

One of the many benefits of our DevSkiller JavaScript online tests is they can be carried out remotely. In a world becoming more and more tailored to remote work, it makes sense that DevSkiller JavaScript coding tests can be taken from anywhere and at any time. Not only is this more convenient for the candidates, but it will save your business countless hours and money spent on in-house testing. A recruiter only needs to do is send out a JavaScript test invite and the candidates can get started wherever they are.

During testing, candidates have the option to use DevSkiller’s own state-of-the-art, in-browser IDE, or if they’d rather, they can complete the project on their favorite IDE and then clone the project to GIT. Candidates can also run unit tests if required.

How are JavaScript coding interview questions evaluated?

The biggest advantage of our JavaScript coding tests is that they are evaluated automatically. This saves recruiters countless hours scoring tests during the screening phase of recruitment.

With DevSkiller, once the test is completed by the candidate, the DevSkiller platform automatically gets to work assessing the answers.

Results are then compiled into a clear and easy-to-understand report. Meaning all the recruiter has done, is to send out a test invite and then sit and wait for the results to pour in.

Assessment is based on the solutions the candidate provides if there are any errors in their code, and how the solution works in edge cases. We also ensure test accuracy, by introducing a number of anti-plagiarism tools.

Tjek ud HTML CSS tests.

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