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.)