Software Engineer Front End Interview Questions

13,458 software engineer front end interview questions shared by candidates

Create a basic implementation of a streams API. The user should be able to push values to a stream, and subscribe to values that are pushed to that stream. For example, const z = new Stream(); z.subscribe((value) => console.log(value)); z.subscribe((value) => console.log(value * 2)); z.subscribe((value) => console.log(value * 3)); z.push(2); Should return 2 4 6
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Software Engineer - Front End

Interviewed at Atlassian

3.1
Oct 17, 2018

Create a basic implementation of a streams API. The user should be able to push values to a stream, and subscribe to values that are pushed to that stream. For example, const z = new Stream(); z.subscribe((value) => console.log(value)); z.subscribe((value) => console.log(value * 2)); z.subscribe((value) => console.log(value * 3)); z.push(2); Should return 2 4 6

I felt that asking the looksay question is the wrong caliber for a front-end developer. I had some difficulty with it because I have never heard of this question/algorithym before (I googled it later). It felt like the interviewer was looking for one specific answer and I could tell that he was getting frustrated that I didn't know the answer. He quickly ended the interview. To me it seems like this is not the type of question to be asking if they are looking for a front-end developer. Seems like a good question for a senior DB role.
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Front End Developer

Interviewed at Axon

3.6
Dec 16, 2014

I felt that asking the looksay question is the wrong caliber for a front-end developer. I had some difficulty with it because I have never heard of this question/algorithym before (I googled it later). It felt like the interviewer was looking for one specific answer and I could tell that he was getting frustrated that I didn't know the answer. He quickly ended the interview. To me it seems like this is not the type of question to be asking if they are looking for a front-end developer. Seems like a good question for a senior DB role.

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