NodeJS interview questions

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NodeJS interview questions

What is a blocking function?

Which is the first argument usually passed to a Node.js callback handler?

What does “callback hell” mean?

What are async and await?

What is the difference between setTimeout and setImmediate?

Does the fs module, used for file-based operations, offer the possibility for synchronous or asynchronous reading and writing?

What are the two methods in the fs module that can be used for reading a whole file at once?

How are objects that generate events called and which class from the events module are they instances of?

What keyword do you need to use to insert a debug breakpoint?

NodeJS interview questions

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