Q
How does the instanceof operator work in JavaScript?

Answer & Solution

Answer: Option A
Solution:
The instanceof operator checks if an object has a specific prototype in its prototype chain.
Related Questions on Average

What does typeof window.evaluate evaluate to in JavaScript?

A). function

B). object

C). string

D). undefined

What does typeof Math evaluate to in JavaScript?

A). math

B). object

C). number

D). undefined

What does the typeof operator return for an undefined variable?

A). undefined

B). number

C). boolean

D). string

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

A). function

B). object

C). undefined

D). null

What will be the output of typeof null in JavaScript?

A). object

B). null

C). undefined

D). string

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

A). 123

B). '123'

C). NaN

D). 1

What is the output of typeof Symbol('id') in JavaScript?

A). symbol

B). object

C). string

D). null

How does JavaScript evaluate Boolean(0)?

A). 1

B). 0

C). null

D). undefined

What does typeof true evaluate to in JavaScript?

A). boolean

B). number

C). string

D). undefined

What is the result of typeof undefined in JavaScript?

A). undefined

B). string

C). null

D). object