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136 interview questions on Javascriptfor developers (2024)

Test your technical skills before an interview of Javascript with 136 corrected questions. Beginner, Intermediate or Expert level.

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136 questions
Easy
12 votes2060 runs1 comment
Easy
9 votes2578 runs1 comment
Hard
7 votes1879 runs1 comment
Hard
7 votes1857 runs2 comments
Easy
6 votes2438 runs1 comment
Hard
5 votes215 runs1 comment
Easy
4 votes2616 runs0 comment
Easy
4 votes2421 runs2 comments
Medium
4 votes2363 runs
2 comments
Hard
4 votes1952 runs0 comment

What will this code display?

Front-end developer
javascript
function
identity
Jean-marie Cléryat Jan 4, 2022
Hard
4 votes1918 runs0 comment
Hard
4 votes1911 runs1 comment
Easy
4 votes1900 runs0 comment
Hard
4 votes1872 runs0 comment

Invert a string in Javascript

Front-end developer
arrays
strings
Jean-marie Cléryat Jan 4, 2022
Easy
4 votes1752 runs1 comment
Medium
3 votes1917 runs0 comment