BFE

Practice Front-End coding problems,
Prepare for job interviews,
Get your dream offer.

JavaScript Coding Problems

As a Front-End developer, JavaScript is the core skill of everything.
We have 150+ JavaScript coding problems for you.
Some are from real Front-End interview reports online,
some are originally created by BFE.dev.

See 150+ JavaScript Coding Problems

Front-End Interview Questions

Besides coding problems, there might be a lot of questions being asked in Front-End interviews.
We are curating over 150 commonly asked Front-End interview questions.
Some are knowledge questions, some are behavioral.

See 150+ Front-End inteview questions

Front-End System/Product Design Problems

We know it is hard to pass System Design/Product Design interviews.
So we listed up the classic Front-End Sytem Design and Product design problems for you
Now you just need to practice by yourself

See System/Product Design problems

We like TypeScript/JavaScript puzzles.

Come have a try at TypeScript Type Challenges and JavaScript Puzzles.
They are maybe not helpful, but fun to know.

See TypeScript Challenges.

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