Which of the following variable types does not exist in JavaScript?

What does Math.sqrt(-1) return?

How can you concatenate multiple strings?

Which is a correct method to create a new array?

To what type are values converted internally when evaluating a conditional statement?

What does ''2'' + 3 + 4 evaluate to?

Which operator returns true if the two compared values are not equal?

________ is a standard for exchanging structured information over the web.

Web pages are seen within a window called the _____.

The _______ defines every object and element on a web page.

The cookie property is created with a required ____ attribute.