Q
What will be the output of typeof null in JavaScript?

Answer & Solution

Answer: Option A
Solution:
typeof null returns 'object', which is a historical bug in JavaScript.
Related Questions on Average

What is the result of typeof NaN in JavaScript?

A). number

B). NaN

C). undefined

D). string

What does typeof window.evaluate evaluate to in JavaScript?

A). function

B). object

C). string

D). undefined

What will be the output of typeof {} in JavaScript?

A). object

B). array

C). null

D). undefined

What does typeof true evaluate to in JavaScript?

A). boolean

B). number

C). string

D). undefined

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

How does JavaScript evaluate typeof /^regex$/ in JavaScript?

A). regexp

B). object

C). string

D). null

What is the result of typeof undefined in JavaScript?

A). undefined

B). string

C). null

D). object

What does typeof new Date() evaluate to in JavaScript?

A). date

B). object

C). string

D). null

How does the typeof operator handle arrays in JavaScript?

A). array

B). object

C). undefined

D). null

What is the result of Boolean('false') in JavaScript?

A). 1

B). 0

C). NaN

D). null