Could you explain your approach to flattening nested arrays in JavaScript, with a code example?

Hard Difficulty

Hard questions require advanced understanding and critical thinking. Here, your problem-solving skills are key, as these questions often involve complex scenarios needing in-depth analysis and well-structured responses.

Javascript question

JavaScript questions test your proficiency with this versatile programming language. Demonstrate your understanding of language fundamentals, asynchronous programming, frameworks, and how you build dynamic web applications.

Here's a Hint

Consider both built-in methods like flat() and recursive approaches, discussing their respective performance implications.