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50 Frontend Interview Questions
About the Author: algoexpert
AlgoExpert is the algorithmic-interview prep platform founded by Clément Mihailescu, a former Google and Facebook engineer. The platform launched in 2018 with a curated set of 150 hand-picked algorithm questions and now spans coding-interview prep, system-design interview prep, machine-learning interview prep, and frontend-specific interview prep across separate sub-products.
The signature strength is the curated problem set — fewer questions than LeetCode, but each one chosen because it represents a pattern that recurs in real interview questions. Solutions are video-explained by senior engineers, and the platform runs on a flat-fee model rather than a subscription.
Watch Online 50 lessons
| # | Lesson Title | Duration | Access |
|---|---|---|---|
| 1 | Sign Up Form Demo | 09:44 | |
| 2 | Item Cart | 06:31 | |
| 3 | Spaghetti Recipe | 11:17 | |
| 4 | Blog Post | 10:43 | |
| 5 | Rainbow Circles | 17:53 | |
| 6 | Navbar | 10:12 | |
| 7 | Pig Emoji | 28:50 | |
| 8 | Purchase Form | 28:26 | |
| 9 | AlgoExpert Products | 18:48 | |
| 10 | Robot Emoji | 29:31 | |
| 11 | Notifications Menu | 10:26 | |
| 12 | AlgoExpert Logo | 07:21 | |
| 13 | Testing Framework | 14:25 | |
| 14 | Array Methods | 09:31 | |
| 15 | Event Target | 10:30 | |
| 16 | Debounce | 11:27 | |
| 17 | This Binding | 11:11 | |
| 18 | Promisify | 07:29 | |
| 19 | Throttle - V2 | 10:51 | |
| 20 | Curry - Updated | 07:17 | |
| 21 | Promise Methods | 14:19 | |
| 22 | Deep Equals | 14:00 | |
| 23 | Promises V2 | 32:27 | |
| 24 | Flatten | 07:53 | |
| 25 | Corresponding Node | 09:31 | |
| 26 | Memoize | 07:32 | |
| 27 | createDom | 04:38 | |
| 28 | Trending Stocks | 13:12 | |
| 29 | Infinite Scroll | 24:30 | |
| 30 | Stopwatch | 25:36 | |
| 31 | Tic Tac Toe | 32:22 | |
| 32 | Todo List | 16:01 | |
| 33 | Typeahead | 20:06 | |
| 34 | Tier List | 17:20 | |
| 35 | Toasts | 19:38 | |
| 36 | Sudoku | 15:35 | |
| 37 | Tip Calculator | 13:49 | |
| 38 | Question List | 21:24 | |
| 39 | Quiz | 18:00 | |
| 40 | Memory | 15:26 | |
| 41 | Crypto Prices | 11:42 | |
| 42 | Wordle | 30:44 | |
| 43 | Phone Input | 11:17 | |
| 44 | Connect Four | 31:30 | |
| 45 | useFetch | 17:36 | |
| 46 | useLocalStorage | 07:14 | |
| 47 | useStateWithHistory | 08:12 | |
| 48 | useInterval | 08:16 | |
| 49 | useWindowSize | 08:01 | |
| 50 | useMap | 07:03 |
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