Front-End Interview Questions
123 questions · 26 free to solve now · live editor with instant test feedback.
- 1MediumImplement debounce (rate-limit API calls)Free
Microsoft · Google · Atlassian
- 2HardResolve task dependencies in a DAG with a concurrency limitFree
Rippling · Uber · Amazon
- 3MediumImplement throttleFree
Microsoft
- 4MediumPromise.all and Promise.allSettled implementationFree
- 5MediummapLimit: async map with a concurrency limitFree
Uber · Swiggy
- 6HardPolyfill of PromiseFree
Microsoft
- 7MediumImplement a curry utilityFree
- 8MediumTypeAhead cache with LRU evictionFree
- 9EasyHow do closures work in JavaScript?Free
- 10MediumInfinite currying — add(1)(2)(3)(4)Free
- 11MediumInheritance in JavaScript (ES5) and class vs prototypalFree
- 12MediumNested object to flat key-value pairsFree
- 13EasyFlatten an arrayFree
Amazon · Adobe
- 14MediumCall, apply, bind and their polyfillsFree
- 15MediumRetry a failing API call with backoffFree
Uber · Razorpay
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