Frontend Engineer Interview Questions

12,707 frontend engineer interview questions shared by candidates

- What's the difference between reference and value equality? - When spreading an object what happens? - Are the two objects that look exactly the same, equal? - JS (no framework) render trick questions. - RESTful concepts
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Senior Frontend Engineer

Interviewed at Apple

4.2
Feb 3, 2026

- What's the difference between reference and value equality? - When spreading an object what happens? - Are the two objects that look exactly the same, equal? - JS (no framework) render trick questions. - RESTful concepts

Online test: Tricky JS fundamental questions 1st technical round: Rewrite `Array.reduce` function, 1 string manipulation problem, write a LazyLoad component, rewrite `debounce` function, mock a layout in CSS . 2nd technical interview: 1 Leetcode medium equivalent problem, describe how you solve it and the time complexity as well. write a toastMessage function (equivalent to notistack). 3rd technical interview: Write a Dropdown component.
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Frontend Engineer

Interviewed at Shopee

3.7
Feb 9, 2021

Online test: Tricky JS fundamental questions 1st technical round: Rewrite `Array.reduce` function, 1 string manipulation problem, write a LazyLoad component, rewrite `debounce` function, mock a layout in CSS . 2nd technical interview: 1 Leetcode medium equivalent problem, describe how you solve it and the time complexity as well. write a toastMessage function (equivalent to notistack). 3rd technical interview: Write a Dropdown component.

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