Front-End Interview Questions
123 questions · 20 free to solve now · live editor with instant test feedback.
- 1MediumImplement debounce (rate-limit API calls)Free
Microsoft · Google · Atlassian
- 2MediumImplement throttleFree
Microsoft
- 3MediumPromise.all and Promise.allSettled implementationFree
- 4HardPolyfill of PromiseFree
Microsoft
- 5MediumImplement a curry utilityFree
- 6EasyHow do closures work in JavaScript?Free
- 7MediumInfinite currying — add(1)(2)(3)(4)Free
- 8MediumInheritance in JavaScript (ES5) and class vs prototypalFree
- 9MediumNested object to flat key-value pairsFree
- 10EasyFlatten an arrayFree
Amazon · Adobe
- 11MediumCall, apply, bind and their polyfillsFree
- 12HardHow JavaScript works: macrotask vs microtask queueFree
Paytm
- 13HardDeep clone an objectFree
Atlassian · Flipkart
- 14MediumImplement Promise.allFree
Amazon · Microsoft
- 15MediumImplement Promise.allSettledFree
Microsoft · Uber
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