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

Please tell us about a time when you made a big mistake at work.

Share an experience where you took a risk.

How would you code a button that, when clicked, makes another button, with each having a click counter?

Tell me about a time you failed at something you were trying to achieve.

In your own words, what is the Document Object Model (DOM) in web development and why does it matter?

What technique would you adopt to develop a function that transforms a nested list of integers into a single list, along with an async/await variant?

What are your design considerations for a social media platform's user interface, including profiles, news feeds, and messaging? Can you detail your strategy for designing a user interface for a real-time chat app supporting group chats and multiple users?

In your understanding, what does the response body of a 304 HTTP status code include?