JavaScript Coding Questions

JavaScript coding questions are expertly prepared by DevSkiller to assist you in finding the perfect JavaScript developer for your business. DevSkiller JavaScript coding questions are designed to test developers’ JavaScript coding skills at all levels of experience.

DevSkiller implements the RealLifeTesting™ methodology into testing interview candidates, an advanced methodology designed to replicate the real-life scenarios a JavaScript developer might encounter day to day. 

Tecnologias abrangidas:

Linguagem de programação: JavaScript

Estruturas e bibliotecas JavaScript: Angular, Reagir, Ember, Backbone, Meteoro, jQuery e outros

Construir ferramentas: NPM, Gulp, Bower

JavaScript
SENIOR
Competências testadas
Duração
57 minutos, no máximo.
Avaliação
Automático
Visão geral dos testes

Perguntas de escolha

avaliação do conhecimento de ES6, JavaScript, HTML, CSS, Acessibilidade

Tarefa de programação - Nível: Difícil

JavaScript | Memorização funcional - Escreva as duas versões do mecanismo genérico de memorização.

Angular
JUNIOR
Competências testadas
Duração
44 minutos, no máximo.
Avaliação
Automático
Visão geral dos testes

Perguntas de escolha

avaliação do conhecimento de Angular2+, JavaScript

Lacunas de código

avaliação do conhecimento de Angular2+, JavaScript

Tarefa de programação - Nível: Fácil

JavaScript | Angular 2+ | Currency Calculator - Finish an application that should convert the amount of money in selected currency to USD.

Redux
JUNIOR
Competências testadas
Duração
35 minutos, no máximo.
Avaliação
Automático
Visão geral dos testes

Perguntas de escolha

avaliação do conhecimento de JavaScript, Redux

Tarefa de programação - Nível: Fácil

JavaScript | Redux | HR Department - reducers - Implement correctly the redux reducers and selectors.

JavaScript
SENIOR
Competências testadas
Duração
46 minutos, no máximo.
Avaliação
Automático
Visão geral dos testes

Perguntas de escolha

avaliação do conhecimento de ES6, JavaScript

Tarefa de programação - Nível: Difícil

JavaScript | Memorização funcional - Escreva as duas versões do mecanismo genérico de memorização.

TypeScript
MÉDIO
Competências testadas
Duração
126 minutos, no máximo.
Avaliação
Automático
Visão geral dos testes

Perguntas de escolha

avaliação do conhecimento de Datilografia

Tarefa de programação - Nível: Médio

TypeScript | NestJS | Coffee Recommendation API for My Barista app - Implementar o serviço NestJS REST para avaliação e recomendação de tipos de café.

TypeScript
SENIOR
Competências testadas
Duração
105 minutos, no máximo.
Avaliação
Automático
Visão geral dos testes

Perguntas de escolha

avaliação do conhecimento de Datilografia

Tarefa de programação - Nível: Difícil

TypeScript | Social Media Queries | Find friends by name - Implementar o funtion FriendsQueries#queryByNameMatching de acordo com os requisitos e fazer todos os testes passarem.

JavaScript
JUNIOR
Competências testadas
Duração
50 minutos, no máximo.
Avaliação
Automático
Visão geral dos testes

Perguntas de escolha

avaliação do conhecimento de JavaScript

Tarefa de programação - Nível: Fácil

JavaScript | Word Search - Inicializar o objeto WordSearch para segurar a letraGrid e implementar o método de busca que irá pesquisar uma determinada grade em todas as direções.

Reagir
SENIOR
Competências testadas
Duração
175 minutos, no máximo.
Avaliação
Automático
Visão geral dos testes

Tarefa de programação Front End - Nível: Sênior

JavaScript | React, Redux | Livro de Endereços - Implementar funcionalidades em falta de uma pequena aplicação web React construída em cima do Redux.

Tarefa de programação back end - Nível: Médio

JavaScript | Node.js | Livro de Endereços - Implementar pontos finais para ir buscar a lista de contatos (com uma correspondência de fase e limitação de resultados), buscar detalhes de um único contato e apagar o contato dado.

Reagir
JUNIOR
Competências testadas
Duração
35 minutos, no máximo.
Avaliação
Automático
Visão geral dos testes

Perguntas de escolha

avaliação do conhecimento de JavaScript, Reagir

Tarefa de programação - Nível: Fácil

Javascript | Reagir | Notas do calendário - Implementar uma aplicação com a qual o utilizador pode adicionar uma nota para uma data escolhida a partir de um calendário.

JavaScript
JUNIOR
Competências testadas
Duração
35 minutos, no máximo.
Avaliação
Automático
Visão geral dos testes

Lacunas de código

avaliação do conhecimento de JavaScript

Tarefa de programação - Nível: Fácil

jQuery | Manipulação DOM - formulário básico - Implementar um formulário interativo para permitir a edição e o cálculo de estatísticas simples.

JavaScript
MÉDIO
Competências testadas
Duração
51 minutos, no máximo.
Avaliação
Automático
Visão geral dos testes

Perguntas de escolha

avaliação do conhecimento de JavaScript

Tarefa de programação - Nível: Médio

jQuery | Manipulação DOM - Implementar formulário interactivo para permitir a edição, confirmação de tarefas, desactivação de entradas e cálculo de estatísticas.

Reagir Nativo
SENIOR
Competências testadas
Duração
108 minutos, no máximo.
Avaliação
Automático
Visão geral dos testes

Perguntas de escolha

avaliação do conhecimento de ES6, JavaScript

Tarefa de programação - Nível: Difícil

React Native | Movie Store - Implementa uma aplicação que permite aos utilizadores comprar todos os filmes que possam imaginar.

The right JavaScript online tests to screen JavaScript developers

Recommended roles for JavaScript coding questions

  • desenvolvedor de JavaScript
  • Desenvolvedor Junior JavaScript
  • Frontend developer
  • Full-Stack developer
  • Desenvolvedor de software
  • Desenvolvedor web

How DevSkiller JavaScript coding questions work

DevSkiller JavaScript coding questions are powered by the RealLifeTesting™ methodology, which is uniquely designed to allow recruiters to send applicants a JavaScript test that aims to mirror the real challenges they will face when working for your business. Meaning you can accurately test exactly how well each applicant will perform on the job, during the screening process. This method allows you to accurately assess a JavaScript developer’s time-management skills, problem-solving ability, and JavaScript coding skills- all before the interview stage. 

Características principais

  • Test JavaScript coding ability and not just academic ability
  • Save time with remote testing 
  • The RealLifeTesting™ methodology offers a unique testing platform where candidates can opt to use their own IDE, clone to Git, run unit tests, and access Stack Overflow, Github, and Google for research.
  • Effective anti-plagiarism tools automatically scan content to assure test accuracy
  • Tests can be monitored in real-time
  • Automatically generated non-technical results 
  • Tests range from senior-level developers down to junior JavaScript developer positions. 

Skills covered in our JavaScript coding questions

  • ES5
  • ES6
  • Funcional
  • Programação Funcional
  • JavaScript
  • NestJS
  • Nó.JS
  • API REST 
  • Datilografia
  • Reagir
  • Reagir Nativo
  • React-Redux
  • Redux
  • Redux-Form
  • jQuery
  • Teste de Instantâneos
  • Angular
  • Formulários Angulares API
  • Formulários Reativos Angulares
  • Segurança Angular
  • Gabaritos Angulares
  • Formulários com modelo
  • Desenvolvimento Web

What to look for in a JavaScript Developer

JavaScript (or JS) is a multi-paradigm programming language that is one of the most popular programming languages in use today. Due to its popularity, it can be hard to narrow down the right JavaScript developer. Here’s what to look out for:

The basics of JavaScript are relatively easy to pick up meaning a lot of developers only learn what they need to get things done. However, a good JavaScript developer will need to have good background knowledge of the language itself in order to be able to write high-quality applications. 

JavaScript also develops very quickly and new frameworks are created each day, meaning it is a positive, if even a Junior JavaScript developer, can demonstrate a good knowledge of popular frameworks. However, it is perhaps more important to have a JavaScript developer who can demonstrate knowledge of older JavaScript frameworks or libraries and therefore a deeper understanding of the language as a whole.

It is also important to understand that a JavaScript developer will have a different knowledge base depending on their experience and the role they are applying for. For instance, a front-end developer will require a different skill set to a full stack developer. In these cases, core knowledge of the language will be the same, but each developer should also have specific knowledge related to their field of work. 

If you are hiring for a higher level position then commercial experience will also be required, but for a mid-level or junior JavaScript developer, a portfolio containing some well-written code will suffice.

Want to customize JavaScript coding questions?

DevSkiller JavaScript coding questions are completely adaptable so they can be customized to suit your company’s requirements. You can choose the programming language being assessed, the time each test will take to complete, and even monitor the tests in real-time. 

Want proof that our JavaScript coding questions work?

Knowing how best to invest your company’s money can be a daunting prospect, so don’t take our word for it, here is what our clients have to say:-

Spartez is a Platinum Top Vendor on the Atlassian Marketplace. The company focuses on the Atlassian and agile ecosystem, providing useful tools for Server and Cloud, as well as offering support to customers and evaluators.

Before turning to DevSkiller, Talent acquisition specialist at Spartez- Patrycja Kiljańska and her team, used to screen interview candidates using an in-house solution which resulted in more than 23% of candidates passing the initial test. This made it incredibly difficult to decide who to bring back for the next phase, which then led to recruiters conducting far more interviews than were necessary.  Furthermore, screening each test took around 15-20 minutes to evaluate, adding to the strain of their workforce. The result was that the whole process was inefficient and labored.

DevSkiller’s testing is evaluated automatically and after turning to DevSkiller to conduct a more thorough screening process for candidates, Spartez found that only 10.23% of applicants made it past the first stage of technical screening and that the company as a whole, were able to filter down 43% more candidates during the recruitment process, before arranging a one-to-one meeting. 

Patrycja Kiljańska – Talent acquisition specialist at Spartez

"Substituímos uma solução interna de alta manutenção pelo DevSkiller. Nosso processo parece o mesmo, no entanto, o produto nos dá um melhor desempenho. Os resultados também são muito mais fáceis de avaliar".

Perguntas mais frequentes

O que é RealLifeTestingTM?

The RealLifeTestingTM methodology is the foundation of all DevSkiller JavaScript coding questions. The program is designed to simulate real, everyday JavaScript scenarios that your developer applicants are likely to encounter in their work. This method of testing allows recruiters to have a comprehensive understanding of an applicant’s skill level from the very beginning of the screening process.

Only the candidates most adept at the role, are able to demonstrate the clear understanding and knowledge required to progress through the JavaScript test. 

Quanto tempo demora a montar o DevSkiller?

Setting up Java coding questions takes no time at all and can be ready to send in as little as 5 minutes. DevSkiller stores an extensive library of coding tests and JavaScript questions, meaning you can start assessing JavaScript developer candidates as soon as you set up your account. 

Do I need to be a programmer to use DevSkiller?

The great thing about DevSkiller is it has been designed to generate results automatically and runs with as little external input as possible. This means that ready-to-use tests can be carried out by recruiters who have little knowledge of programming themselves and then results are presented in a simple, easy to understand manner. Furthermore, if you do have someone who is technically minded carrying out the recruitment process, then the tests can even be prepared from scratch.

What do you do about plagiarism?

The advantage the DevSkiller model has is that Java coding questions can be assessed automatically. This means that the DevSkiller model can also implement stringent anti-plagiarism tools to ensure each test’s authenticity. For instance, checks can be carried out to see if the candidate is looking at a different screen while carrying out their test. DevSkiller can also automatically cross-reference each candidate’s coding and answers, with answers given by previous candidates and if there is a match the system can categorically filter out any cheating. 

What do candidates think of DevSkiller JavaScript coding questions?

Developer candidates are overwhelmingly positive in their feedback of the DevSkiller model of using JavaScript tests. The vast majority of developers enjoy the opportunity to be able to demonstrate their technical skills in a way that is relevant to their work. Most also appreciate that DevSkiller tests use coding tools and conventions like unit testing, and cloning to GIT from a personal IDE. 

Many developers can be suspicious of academic algorithmic tests and some even refuse to take them at all, as these don’t test the skills that developers actually use day to day and might ask for knowledge of something they haven’t used practically in years. With DevSkiller tests however, developers notice the difference and appreciate being able to demonstrate their technical skills.