Q
What will typeof NaN return?

Answer & Solution

Answer: Option A
Solution:
The typeof operator returns 'number' for NaN (Not-a-Number) values.
Related Questions on Average

What is the result of typeof Symbol('id')?

A). symbol

B). object

C). string

D). undefined

What is the result of null == undefined?

A). 1

B). 0

C). Error

D). NaN

Which function can convert a number to a string in JavaScript?

A). toString()

B). parseInt()

C). String()

D). Number()

Which of the following is not a primitive data type in JavaScript?

A). String

B). Number

C). Object

D). Boolean

What is the output of typeof function() {}?

A). function

B). object

C). undefined

D). number

Which symbol is used to denote a string template literal?

A). ''

B).

C). ``

D). {}

What is the output of '5' + 3?

A). 8

B). 53

C). 8

D). Error

What is the data type of an array in JavaScript?

A). Array

B). Object

C). Collection

D). List

What is the data type of true in JavaScript?

A). String

B). Boolean

C). Number

D). Object

What is the output of typeof null?

A). null

B). undefined

C). object

D). number