If you know you think you know your objects from your arrays and your null from your undefined, here’s a quiz for you from Perfection Kills.

I was recently reminded about Dmitry Baranovsky’s Javascript test, when N. Zakas answered and explained it in a blog post. First time I saw those questions explained was by Richard Cornford in comp.lang.javascript, although not as thoroughly as by Nicholas.

I decided to come up with my own little quiz. I wanted to keep question not very obscure, practical, yet challenging. They would also cover wider range of topics.

There are fourteen questions in all, starting here:

    (function(){
      return typeof arguments;
    })();

“object”

“array”

“arguments”

“undefined”

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