Can you create a function undefinedToNull(), ensuring it converts all undefined values in an object to null?

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 recursive approaches for nested objects and handle edge cases like arrays, functions, and circular references in your implementation.