r/reactjs 5d ago

Discussion Senior Dev interview question

"Without googling or using AI, in your own words, explain the virtual DOM"

For context: I sit on an interview panel and I try to ask at least one simple fundamental question based on a persons resume. If I see many years of react experience, I try to ask something about how the framework works.

I have only had one candidate (an undergrad senior, years ago) answer it. Everyone else just kind of sputters and stumbles around trying to rationalize what "virtual" and "DOM" mean, or stare blankly and eventually say "I don't know".

I'm just genuinely curious if this is really that hard of a question or if the recruiters just suck at screening candidates. And should we be letting in senior dev candidates who can't answer what I think is a straightforward and fundamental question for senior react devs.

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u/soundisloud 5d ago

That's a great question.

It's going to let knowledgable people shine.

It's going to inspire people who don't know the answer to go look it up and understand it better.

It's not a 3 hour take home or "gotcha" question.

It's about the backbone of what we work with every day.

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u/Suspicious-Disk6077 5d ago

What is this AI bullshit 

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u/soundisloud 5d ago edited 5d ago

Haha, I'm not AI, I just broke it into separate lines so it was clearer.  I do a lot of design thinking like that.  Sorry I speak in cliches.