Javascript Scenario Based Questions

 

Javascript Scenario-Based Questions with solutions:


1.  A function runs slowly when processing a large array. How would you optimize it?


(Approach: Algorithmic complexity analysis, Web Workers, or chunking with requestIdleCallback.)

2.  Users report a UI freeze when filtering a list of 10,000 items. How would you fix this?

(Solution: Virtualization, debouncing input, or offloading to a Web Worker.)

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