Q
What is the result of typeof NaN in JavaScript?

Answer & Solution

Answer: Option A
Solution:
typeof NaN returns 'number'.
Related Questions on Average

What will be the output of [] instanceof Array in JavaScript?

A). 1

B). 0

C). null

D). undefined

What does typeof window.evaluate evaluate to in JavaScript?

A). function

B). object

C). string

D). undefined

What will be the output of typeof null in JavaScript?

A). object

B). null

C). undefined

D). string

How does JavaScript evaluate Boolean(0)?

A). 1

B). 0

C). null

D). undefined

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

A). function

B). object

C). undefined

D). null

What is the result of typeof undefined in JavaScript?

A). undefined

B). string

C). null

D). object

How does JavaScript evaluate typeof 'Hello'?

A). string

B). object

C). undefined

D). null

What does the typeof operator return for an undefined variable?

A). undefined

B). number

C). boolean

D). string

How does the instanceof operator behave with primitive values in JavaScript?

A). Throws an error

B). Returns true for all primitive values

C). Returns false for all primitive values

D). Primitive values cannot be used with instanceof

What does Number('123') return in JavaScript?

A). 123

B). '123'

C). NaN

D). 1