Master These 60 JavaScript Topics for Your Next Interview [PART 1]

Introduction:

JavaScript is a vast and dynamic language, pivotal for web development.

I have shortlisted 60 essential topics that will not only prepare you for interviews but also deepen your understanding of JavaScript’s inner workings.

Each topic includes two detailed scenario-based questions to test and expand your knowledge.

1. Call Stack

Q1: What happens if you have too many nested function calls, and how might this occur in practice?

Answer:

If the call stack grows too large, you’ll encounter a “stack overflow” error. This might happen in scenarios involving deep recursion without proper base cases or when dealing with complex nested callbacks. For example, an inefficient implementation of calculating factorial might lead to this if the input is too large. To mitigate, ensure your recursive functions have proper exit conditions or consider iterative approaches or tail call optimization where supported.

Q2: How does JavaScript manage function execution order with respect to the call stack?

Answer:

JavaScript operates on a single-threaded model with a call stack that follows LIFO…