winkle
Test library
Framework Includes code

Node.jsJunior level.

Tests them on modules and packages, reading and writing files, handling errors, and the shape of a Node program.

What's included

  • Only reviewed, approved questions
  • Every question editable before it’s sent
  • Timed at 60 minutes
  • Camera, screen and microphone recording
  • Leaving the tab is logged
  • Copy and paste blocked
  • Scored automatically, with reasons for written answers

What the 220 questions ask.

  • Multiple choice

    One right answer or several. Marked the moment they submit.

  • Coding

    They write a solution in a code editor in the browser.

Drawn from 66 topics

How many approved Junior questions the bank holds on each.

  • npm14
  • File system13
  • Modules11
  • Streams11
  • ES Modules6
  • Process6
  • Async5
  • Buffers5
  • Error Handling5
  • HTTP5
  • HTTP Server5
  • JSON5
  • Process lifecycle5
  • REST Design5
  • Child processes4
  • Environment4
  • Event loop4
  • fetch4
  • Injection4
  • Memory Leaks4
  • Paths4
  • Retries4
  • Caching3
  • Core APIs3
  • Dependency Security3
  • Deployment3
  • Events3
  • Globals3
  • libuv Threadpool3
  • Logging3
  • Profiling3
  • Queues3
  • Security3
  • Testing3
  • Timers3
  • Worker threads3
  • Arrays2
  • Async patterns2
  • Connection Pooling2
  • Core modules2
  • Environment Variables2
  • Errors2
  • Express2
  • Fastify2
  • Graceful Shutdown2
  • Packaging2
  • process.nextTick2
  • Prototype Pollution2
  • Types2
  • WebSockets2
  • Cluster1
  • CommonJS Modules1
  • Database Access1
  • Debugging1
  • HTTP and networking1
  • HTTP Client1
  • HTTP/21
  • HTTPS1
  • Idempotency1
  • Keep-Alive1
  • Modules and packages1
  • Observability1
  • Secrets1
  • Signals1
  • Strings1
  • TCP with net1

From test to shortlist in three steps.

  1. 01

    Pick a test

    Choose the skill and the level. Every question can be edited or swapped before anything is sent.

  2. 02

    Send one link

    Candidates take it in the browser from one link, against the clock.

  3. 03

    Read the scores

    Multiple choice marks itself. Written answers get a score with the reasoning behind it, so a surprising number can be checked.

About the Node.js test.

What employers ask before sending the Junior Node.js test, answered with its real figures.

  • How long does the Junior Node.js test take?

    20 questions in about 60 minutes. The clock is set to 60 minutes by default. Switch timing off in the test’s settings and the duration becomes a suggestion instead of a limit.

  • What kinds of questions are in it?

    It mixes multiple choice and coding questions. Coding questions are answered in a code editor in the browser. Its questions run from intro to expert difficulty.

  • How is it scored?

    Automatically. Multiple choice marks itself the moment the candidate submits. Written answers are scored against a model answer, with partial credit for an answer that is partly right, and every written score comes with the reasoning behind it so a surprising one can be checked.

  • Which Node.js level should I send?

    Node.js comes at 4 levels: Junior (20 questions, 60 min), Mid (20 questions, 35 min), Senior (20 questions, 35 min) and Staff (20 questions, 60 min). Junior draws on introductory questions, Mid draws on intermediate questions, Senior draws on advanced questions and Staff draws on expert questions. Pick the level the role needs, not the one on the candidate’s CV.

  • Can I change the questions?

    Yes. Using a test puts a draft in your account, and you can edit, remove or swap any question before it goes to anyone.

  • How do you keep every result fair and honest?

    New tests start with camera, screen and microphone recording on, every time the candidate leaves the test tab logged, copy and paste blocked outside the code editor and questions hidden while the window isn’t in front, and printing blocked. Each is a switch in the test’s settings. You can also set how many times a candidate may leave the tab before the test submits itself, and shuffle the question order and answer options for each candidate.

  • Why can’t I see the questions on this page?

    A public page with the questions on it is an answer key for every candidate who finds it. Sign up free and using the test puts every question in front of you to review before anything is sent.

  • What does it cost?

    Nothing to start: sign up free, with no card. The plans and their limits are on the pricing page.

Send it today.

Sign up, and this test is waiting in your library, one click from a link you can send.