Frontend Developer Interview Questions

8,954 frontend developer interview questions shared by candidates

1. How will you build a PWA? 2. What do you know about the PWA lifecycle? 3. How is a PWA different from a normal JavaScript file? 4. What is the output of the following code for(var i=0;i<10;i++){ setTimeout(() => console.log(i),0) } 5. Why did you choose JavaScript and Web Development when there are many languages? 6. Why SASS is needed when CSS is existent? 7. BEM Architecture 8. Browser APIs like DOM and BOM, DOM traversal
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Frontend Developer

Interviewed at Ola

2.9
May 26, 2022

1. How will you build a PWA? 2. What do you know about the PWA lifecycle? 3. How is a PWA different from a normal JavaScript file? 4. What is the output of the following code for(var i=0;i<10;i++){ setTimeout(() => console.log(i),0) } 5. Why did you choose JavaScript and Web Development when there are many languages? 6. Why SASS is needed when CSS is existent? 7. BEM Architecture 8. Browser APIs like DOM and BOM, DOM traversal

During the Pair Programming Session: - Javascript/React - API Request Logic - Maintainable/scalable code During the Technical Discussion: - Unit Testing/TTD - Code reviews - Gitflow/Source control - Usability - Styling During the meeting with the VP of Engineering: - Performances - Optimisations - Best practices During the meeting with one of the founders - Performance - GraphQL API (structuring) - WebSockets (comparison with GraphQL) - Self-learning
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Senior Frontend Developer

Interviewed at Intropic

3.2
Oct 17, 2022

During the Pair Programming Session: - Javascript/React - API Request Logic - Maintainable/scalable code During the Technical Discussion: - Unit Testing/TTD - Code reviews - Gitflow/Source control - Usability - Styling During the meeting with the VP of Engineering: - Performances - Optimisations - Best practices During the meeting with one of the founders - Performance - GraphQL API (structuring) - WebSockets (comparison with GraphQL) - Self-learning

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