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Software Engineer Javascript Interview Questions

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98 software engineer javascript interview questions shared by candidates

The hardest interview was behavioral. Most interviewees fail at that stage so prepare well. The questions are all standard and expected. JS interview was about a basic lodash like functionality implementation. React interview was about implementing a search functionality but the crux was about performance algo optimization via data appropriate structures. Both interviewers asked about time space complexity and both requested second attempt at improving your basic solution if not in code since little time will be left but in words. The deep dive was about picking some project from the past that you know good and diving deep into technical and architectural aspects testing your general understanding of how things work together.
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Senior Software Engineer (JavaScript)

Interviewed at Elastic

3.9★
Feb 8, 2024

The hardest interview was behavioral. Most interviewees fail at that stage so prepare well. The questions are all standard and expected. JS interview was about a basic lodash like functionality implementation. React interview was about implementing a search functionality but the crux was about performance algo optimization via data appropriate structures. Both interviewers asked about time space complexity and both requested second attempt at improving your basic solution if not in code since little time will be left but in words. The deep dive was about picking some project from the past that you know good and diving deep into technical and architectural aspects testing your general understanding of how things work together.

The second part of code challenge was very unexpected. Because they provide an algorithm that was wrote very badly. In the time of code challenge I can't focus on this code (I want to wrote my algorithm, I can't imagined why I must correct this code, I can write better code in a short time. So I consume a lot of time for nothing.
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Javascript Software Engineer, Full Stack

Interviewed at Battlefy

3.9★
Dec 17, 2014

The second part of code challenge was very unexpected. Because they provide an algorithm that was wrote very badly. In the time of code challenge I can't focus on this code (I want to wrote my algorithm, I can't imagined why I must correct this code, I can write better code in a short time. So I consume a lot of time for nothing.

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