Question

What is the return type of typeof for standard JavaScript objects?

(a) xml

(b) object

(c) dom

(d) html

I got this question during an interview.

Question is taken from Shorthand functions and Multiple catch clauses topic in section Classes and Modules in JavaScript of JavaScript

Answer 1

Right option is (b) object

To explain I would say: The typeof operator returns “object” for all standard JavaScript objects. It returns “object” for a null, “number” for NaN, “number” for Infinity, “object” for a “new Number(1)” and “object” for an array.