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49 interview questions on Node.jsfor developers (2025)

Test your technical skills before an interview of Node.js with 49 corrected questions. Beginner, Intermediate or Expert level.

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49 questions
Expert
10 votes890 runs0 comment

How to define a global variable with Node.js?

Back-end developer
variables
node.js
Jean-marie Cléryat May 11, 2022
Medium
6 votes889 runs0 comment

Parse a query string into an object in NodeJS

Back-end developer
javascript
node.js
Jean-marie Cléryat May 11, 2022
Hard
3 votes911 runs0 comment

A simple SocketIO chat server, coupled with Express.

Back-end developer
socket.io
websockets
Jean-marie Cléryat May 11, 2022
Hard
3 votes878 runs0 comment
Hard
2 votes961 runs0 comment

How to get the result of 3 asynchronous functions in NodeJS

Back-end developer
promises
async
javascript
Jean-marie Cléryat May 11, 2022
Medium
2 votes894 runs0 comment
Hard
1 vote937 runs0 comment
Medium
1 vote919 runs0 comment
Hard
1 vote919 runs0 comment
Medium
1 vote912 runs0 comment
Hard
1 vote904 runs1 comment

Write a NodeJS program that logs the contents of a file.

Back-end developer
error handling
file system
Jean-marie Cléryat May 11, 2022
Easy
1 vote900 runs1 comment
Easy
1 vote900 runs0 comment

How to add the `async` module to our project?

Jean-marie Cléryat May 11, 2022
Hard
1 vote899 runs0 comment

Fix the following code:

Back-end developer
callback
this
Jean-marie Cléryat May 11, 2022
Medium
1 vote898 runs0 comment
Expert
1 vote878 runs0 comment
Easy
1 vote874 runs0 comment

Include a module in NodeJS

Back-end developer
modules
require
Jean-marie Cléryat May 11, 2022
Easy
1 vote867 runs0 comment

Import a function from an ES2015 module in NodeJS

Back-end developer
modules
import
export
Jean-marie Cléryat May 11, 2022