fr
fr

138 interview questions on Javascriptfor developers (2025)

Test your technical skills before an interview of Javascript with 138 corrected questions. Beginner, Intermediate or Expert level.

Technology
Profession
Test
Sort by
Newest
Most popular
Last review
Filter by
Published
138
To review
0
138 questions
Easy
23 votes3418 runs
2 comments
Easy
10 votes3899 runs
5 comments
Easy
10 votes3719 runs
3 comments
Easy
9 votes3690 runs2 comments
Hard
9 votes2222 runs3 comments
Easy
8 votes3923 runs0 comment
Medium
8 votes3750 runs
5 comments
Hard
8 votes2259 runs1 comment
Hard
7 votes2270 runs0 comment

Invert a string in Javascript

Front-end developer
arrays
strings
Jean-marie Cléryat Jan 4, 2022
Easy
7 votes2261 runs0 comment
Medium
7 votes1467 runs3 comments
Easy
6 votes3763 runs
2 comments
Medium
6 votes2549 runs
1 comment
Hard
6 votes2334 runs0 comment

What will this code display?

Front-end developer
javascript
function
identity
Jean-marie Cléryat Jan 4, 2022
Easy
5 votes2641 runs
1 comment