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Frontend Software Engineer Interview Questions

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869 frontend software engineer interview questions shared by candidates

In the technical interview, I was asked some follow up questions about my code challenge and possible alternative implementations of certain functions. Interviewers clearly dedicated some time to review my test and came prepared, big kudos for that.
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Frontend Software Engineer

Interviewed at SafetyCulture

3.4★
Feb 6, 2021

In the technical interview, I was asked some follow up questions about my code challenge and possible alternative implementations of certain functions. Interviewers clearly dedicated some time to review my test and came prepared, big kudos for that.

Why did you switch from Company A to Company B (including jobs from 10–15 years ago)? Complete 50-question IQ test (pattern/logic questions). Culture fit test with repeated personality-style statements.
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Software Engineer, Frontend - Risk Platform

Interviewed at Coinbase

3.6★
Aug 18, 2025

Why did you switch from Company A to Company B (including jobs from 10–15 years ago)? Complete 50-question IQ test (pattern/logic questions). Culture fit test with repeated personality-style statements.

Q. What is a Closure in javascript? Q. console.log("a" + 20 +20); console.log(20+20+"a"); Q. Where are JS variables stored - Heap/Stack - where? Q. What is $ in jQuery? Q. How do you differentiate between Angular's $ & jQuery's $. Q. How can you implement multithreading in javascript? How can I execute multiple functions in javascript? Q. On click of a button, API is hit and html is rendered from Server. This HTML contains a button. I want to add an event saying alert[1); on this button. How can I do it? Given, the element id of the button to you in the callback. I don't want multiple alerts to fire.
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Software Engineer(Frontend)

Interviewed at Quovantis Technologies

4★
Jan 27, 2017

Q. What is a Closure in javascript? Q. console.log("a" + 20 +20); console.log(20+20+"a"); Q. Where are JS variables stored - Heap/Stack - where? Q. What is $ in jQuery? Q. How do you differentiate between Angular's $ & jQuery's $. Q. How can you implement multithreading in javascript? How can I execute multiple functions in javascript? Q. On click of a button, API is hit and html is rendered from Server. This HTML contains a button. I want to add an event saying alert[1); on this button. How can I do it? Given, the element id of the button to you in the callback. I don't want multiple alerts to fire.

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