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88 interview questions on NodeJSfor developers (2025)

Test your technical skills before an interview of NodeJS with 88 corrected questions. Beginner, Intermediate or Expert level.

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88 questions
Expert
10 votes992 runs0 comment

How to define a global variable with Node.js?

Back-end developer
variables
node.js
Jean-marie Cléryat May 11, 2022
Medium
7 votes971 runs0 comment

Parse a query string into an object in NodeJS

Back-end developer
javascript
node.js
Jean-marie Cléryat May 11, 2022
Easy
4 votes1300 runs0 comment
Easy
4 votes1199 runs0 comment
Hard
4 votes1050 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
Easy
3 votes1236 runs0 comment
Easy
3 votes1215 runs0 comment
Easy
3 votes1210 runs0 comment
Easy
3 votes1206 runs0 comment

What is NPM?

Back-end developer
package manager
npm
Léoat Mar 28, 2022
Hard
3 votes1008 runs0 comment

A simple SocketIO chat server, coupled with Express.

Back-end developer
socket.io
websockets
Jean-marie Cléryat May 11, 2022
Medium
3 votes984 runs0 comment
Expert
3 votes976 runs0 comment
Hard
3 votes967 runs0 comment
Medium
2 votes1003 runs0 comment
Hard
2 votes1003 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
Medium
2 votes921 runs1 comment