Credits: Illustration by @yangheng

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Unlike typical software engineer job interviews, front end job interviews have less emphasis on algorithms and have more questions on intricate knowledge and expertise about the domain — HTML, CSS, JavaScript, just to name a few areas.

While there are some existing resources to help front end developers in preparing for interviews, they aren't as abundant as materials for a software engineer interview. Among the existing resources, probably the most helpful question bank would be Front-end Developer Interview Questions. Unfortunately, I couldn't find many complete and satisfactory answers to these questions online, hence here is my attempt at answering them. Being an open source repository, the project can live on with the support of the community as the state of web evolves.

Front End interview preparation resources are scarce but no fret, we tell you what to expect and everything else you need to know!

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What even is Front End system design?! Learn more about them and how to ace these interviews.

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Coding questions are an entirely different ball game for Front End interviews. We tell you how to prepare for them (hint: not just LeetCode).

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Go from zero to front end interview hero with this handbook. No prior interview experience needed.

Learn to walk before you learn to fly. While React, Vue and Angular are cool, make sure you also know your fundamentals.

The best thing about Open Source is that the community vets the contents, so you can be sure the answers here have been proofread by many.

Anybody who wants to land a job at a tech company for a front end role and is looking to make sure they don't stumble on the basic questions. To be frank, I revise the answers here from time to time as well!

You might be interested in the Tech Interview Handbook which has helpful content on general coding interviews such as algorithms, behavioral questions and an interview cheatsheet!

Credits: Illustration by unDraw

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1. Pop Quiz Questions
2. JavaScript Utility Function Questions
3. Front End Coding Questions
4. JavaScript Algorithm Questions
5. Front End System Design Questions

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If you are interested in how data structures are implemented, check out Lago, a Data Structures and Algorithms library for JavaScript. It's meant for reference and studying purposes, not really for production use.

Read our contributing guide to learn about how you can contribute, how to propose improvements or if you are interested in translating the content.

Many hours of hard work have gone into this project. Your support will be very appreciated!

All projects and packages in this repository are MIT licensed.

I am providing code in the repository to you under an open source license. Because this is my personal repository, the license you receive to my code is from me and not my employer (Facebook).