React Js Developer Interview Questions

475 react js developer interview questions shared by candidates

what is semantic tags, inline and block diff, box model, Event delegation, hoisting, promises, debouncing and throttling key diff, logical questions 1) closure example - 2) write a flatten map - [12,3,[4,5,6[68,[39,10],5],6],7,8] 3)find firstUniqueChar console.log(firstUniqueChar("leetcode")); // Output: "l" 4) implement debounce search 5) implement pagination using API
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React Js Developer

Interviewed at Nineleaps Technology Solutions

4.1
Jul 2, 2025

what is semantic tags, inline and block diff, box model, Event delegation, hoisting, promises, debouncing and throttling key diff, logical questions 1) closure example - 2) write a flatten map - [12,3,[4,5,6[68,[39,10],5],6],7,8] 3)find firstUniqueChar console.log(firstUniqueChar("leetcode")); // Output: "l" 4) implement debounce search 5) implement pagination using API

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