Pro JavaScript programmer interview questions (with answers)

Posted by WooYek on Stack Overflow See other posts from Stack Overflow or by WooYek
Published on 2010-03-22T12:22:31Z Indexed on 2010/03/22 12:51 UTC
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JavaScript

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interview-questions

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professional-development

What are good questions to determine if applicant is really a pro JavaScript developer?

Questions that can distinguish if someone is not an ad-hoc JavaScript programmer, but is really doing professional JavaScript development, object-oriented, reusable, and maintainable.

Please provide answers, so an intermediate and ad-hoc JavaScript programmers can interview someone more experienced, coming up with answers to quite few of those advanced questions will elude me. Please avoid open questions.

Please keep one interview question/answer per SO answer for better reading experience and easier interview preparation.

It's possible duplicate, but there only questions and no answers (mostly):

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